- Credit: Music: Alan Walker - Faded by NCS Video editor: Cyberlink Device: OPPO A37F.
- If you want to reset your BIOS to default settings, restart the system and tap F2 or delete to open the BIOS setup page. Look for the option that says Load Default, Reset Default or factory default. Select it and hit enter. It may ask you to confirm the same by pressing 'Y' or hitting enter on yes option.
- Edit Boot Options Windows 7 Noexecute Optin Factory Reset Windows 10
- Edit Boot Options Windows 7 Noexecute Optin Factory Reset Settings
- Edit Boot Options Windows 7 Noexecute Optin Factory Reset Password
- Edit Boot Options Windows 7 Noexecute Optin Factory Reset Key
Open System by clicking the Start button, clicking Control Panel, clicking System and Maintenance, and then clicking System. In the left pane, click Advanced system settings. If you are prompted for an administrator password or confirmation, type the password or provide confirmation. Windows 8 and 10 consolidate various boot options into a single screen named the “Advanced Options” menu. This menu provides access to repair tools and options for changing Windows startup behavior—such as enabling debugging, booting into safe mode, and launching into a recovery environment.
Nov 13, 2020 • Filed to: Windows Computer Solutions • Proven solutions
If the Windows system gets corrupted or having serious software issues, users need to factory reset the system. Eventually, all systems start to lag and exhibit performance issues, which can be fixed only after a factory reset. So, today, we will explore how we can perform a factory reset of Windows 7.
Go through this guide carefully, and you will be able to resolve the problems in Windows 7. Let's begin.
Part 1: Why Need to Factory Reset Windows 7?
Every electronic device has a factory reset feature that restores devices to its original state by erasing all data stored on the devices. And the computer has the factory reset function as well. There could be several reasons for performing a factory reset Windows 7, which include:
- You are going to sell or give your system to another, and a factory reset helps you to avoid privacy leaks.
- Restore your system to undo changes to your system.
- Your system has been running for a long time, and you can factory reset to get rid of data stored on it to attain better performance.
Of course, there could be more reasons to perform a factory reset on your Windows 7. For instance, if your system encounters some minor issues due to your wrong operation, you can factory reset your Windows 7 to fix it.
Part 2: Backup Files Before System Restoring:
Now that we have decided to factory reset the device, we need to back up the files firsthand. The factory reset of Windows 7 through Windows disc will erase every data and partition from the system. So, we have to extract all the priority files.
You can decide between using the Windows Backup tool or a third-party tool for backup. Once the reset is done, you can get the files back on the system using the backup.
Part 3: How to Factory Reset Windows 7?
In this section, we will discuss two ways of factory reset, one with installation CD/DVD and one without the CD/DVD. You can choose the option according to your condition.
3.1 Factory Reset with Installation CD/DVD:
One thing that you will regret while performing a factory reset on Windows 7 Professional is that it doesn't have an in-built refresh and reset option like other versions. But, if you still have the installation disc or media for Windows 7, then you can use it for the reinstallation of OS. Here are the steps that you have to follow.
Step 1: Open Recovery > Choose the Advanced Recovery method under the System Restore section.
Step 2: Select the Reinstall Windows (requires Windows Installation disc) option and proceed. By default, the system will prompt you to perform a backup first. And if you already have a backup, then you can skip the backup and click on the 'Restart' button directly.
Step 3: As the system restarts, the factory reset process will begin, and everything on your system will be deleted.
3.2: Factory Reset without Installation CD/DVD:
If you don't have an installation CD or DVD, then you use the Command Prompt factory reset Windows 7 method. This method involves a complete System Restore using Safe Mode. The steps you need to follow are given below:
Step 1: Restart your computer and press F8 to enter the Boot screen. In the Advanced Boot Options, choose 'Safe Mode with Command Prompt' and press Enter.
Step 2: Log in as Admin and type the command- rstrui.exe. Hit enter and follow the wizard instructions to continue the system restore.
Edit Boot Options Windows 7 Noexecute Optin Factory Reset Windows 10
Or
Step 2(Alternative): You can choose the 'Repair Your Computer' from the Advanced Boot Options screen. System Recovery Options window will appear and select the System Restore option.
Follow the instructions carefully to finish the factory reset. All brands, including HP, Asus, Sony Vaio, Lenovo, and Toshiba, have also provided a recovery tool for this purpose. And there is a detailed guide on how to factory reset Alienware computers.
Part 4: Recover Lost Data after Performing Factory Reset:
If you have factory reset Windows 7 and mistakenly lost your files, then you are on the right page. We have the perfect solution for your data loss problems. Recoverit Data Recovery tool has been providing a solution to millions of users who have suffered from data loss problems. So, whether you lost the files due to a factory reset or system crash, it is possible to retrieve all files without any hassle.
The software provides vital features that allow users to get everything back:
Recoverit Data Recovery - The Best File Recovery Software
- Get all kinds of files back including images, videos, audio files, emails, archives, and others with over 1000+ format support
- Scan all storage devices such as USB drive, SSD, hard drive, flash drive, and others quickly
- 100% guaranteed data recovery solution with an advanced scanning system
To perform data recovery with Recoverit, you need to download and install the application software on your system first. Then you can follow the guide given here:
Step 1: Launch Recoverit:
Run the program on your system and specify the location where the files were located. Then press the 'Start' button to begin the scan.
Step 2: Scan the Location:
By default, Recoverit will perform an All-Around Scan. It will take only a while to finish the scan if the file size is less.
The software can 'Pause' or 'Stop' the scan at any point in time. The files will be listed on the screen by File Path or File Type. You can use additional filters to locate the files you need to restore.
Step 3: Select & Restore:
Once you pinpoint the files, start selecting them. Recoverit allows selective recovery, which means we can choose which file we want back. Select the files carefully and have a preview to ensure they are accessible.
Hit the 'Recover' button at last and decide where you want to save the files. It will take a while to restore everything, but you need to save them in a different location than before as it could risk data overwrite.
Conclusion:
Usually, the factory reset on Windows 7 is performed when the system has suffered from significant damage. Whatever your reason is for factory reset, you can follow the guide and repair your system. And if you are doubtful that you have lost some files, run Recoverit Data Recovery to get everything you lost back on the device.
People Also Ask
- How do I factory reset my computer Windows 7 without a password?Start your computer and continuously click the key necessary to startup the screen. Now boot into the Recovery Manager or the recovery partition as the case may be. Follow the screen guidelines and return Windows 7 to its default settings.
- How to factory reset Windows 7 without recovery partitionBoot your computer with the use of a bootable CD. If you do not have one, create a reset disk in a perfectly working computer. Go to the 'Advanced Boot Options' when you boot the computer and follow the on-screen lead to reset.
- How do I wipe my hard drive Windows 7 without a disk?Both deletions of all the partitions on your hard drive and formatting cannot completely delete the data on your hard drive. It is advisable that you find reliable software online and wipe your hard drive, especially if you are giving it out or selling.
Computer Data Recovery
- Windows PE
- System problems
- PC Errors
The BCDEdit /set command sets a boot entry option value in the Windows boot configuration data store (BCD). Use the BCDEdit /set command to configure specific boot entry elements, such as kernel debugger settings, memory options, or options that enable test-signed kernel-mode code or load alternate hardware abstraction layer (HAL) and kernel files. To remove a boot entry option, use the BCDEdit /deletevalue command.
Caution
Edit Boot Options Windows 7 Noexecute Optin Factory Reset Settings
Administrative privileges are required to use BCDEdit to modify BCD. Changing some boot entry options using the BCDEdit /set command could render your computer inoperable. As an alternative, use the System Configuration utility (MSConfig.exe) to change boot settings.
Note
Before setting BCDEdit options you might need to disable or suspend BitLocker and Secure Boot on the computer.
Alternatives to BCDEdit
Settings startup options
Tip
To avoid the risk associated with using BCDEdit, consider using an alternative method to perform boot configuration
Startup Settings
Some common boot options such as enabling debugging mode are available in the start up options. In Windows 10, the settings can be accessed in Settings, Update and Security, select Recovery. Under Advanced startup, select Restart Now. When the PC reboots, select Startup options. Then select Troubleshoot > Advanced options > Startup Settings , then select Restart button. When the PC restarts, you will be able to set the available startup options.
System Configuration Utility
Use the System Configuration Utility (MSConfig.exe) instead of BCDEdit when possible. For more information, see How to open MSConfig in Windows 10.
Syntax
Parameters
[{ID}]
The {ID} is the GUID that is associated with the boot entry. If you do not specify an {ID}, the command modifies the current operating system boot entry. If a boot entry is specified, the GUID associated with the boot entry must be enclosed in braces { }. To view the GUID identifiers for all of the active boot entries, use the bcdedit /enum command. The identifier for the current boot entry is {current}. For more information about this option, use the following command: bcdedit /? ID
The {ID} is the GUID that is associated with the boot entry. If you do not specify an {ID}, the command modifies the current operating system boot entry. If a boot entry is specified, the GUID associated with the boot entry must be enclosed in braces { }. To view the GUID identifiers for all of the active boot entries, use the bcdedit /enum command. The identifier for the current boot entry is {current}. For more information about this option, use the following command: bcdedit /? ID
Note
If you are using Windows PowerShell, you must use quotes around the boot entry identifier, for example: '{49916baf-0e08-11db-9af4-000bdbd316a0}' or '{current}'.
datatypevalue
Use the command line help to view options
Use the command line help for BCDEdit to display information available for a specific version of Windows.
The following sections describe some common datatypes and their associated values.
Boot Settings
bootlog [ yes | no ]
Enables the system initialization log. This log is stored in the Ntbtlog.txt file in the %WINDIR% directory. It includes a list of loaded and unloaded drivers in text format.
Enables the system initialization log. This log is stored in the Ntbtlog.txt file in the %WINDIR% directory. It includes a list of loaded and unloaded drivers in text format.
bootmenupolicy [ Legacy | Standard ]
Defines the type of boot menu the system will use. ForWindows 10, Windows 8.1, Windows 8 and Windows RT the default is Standard. For Windows Server 2012 R2, Windows Server 2012, the default is Legacy. When Legacy is selected, the Advanced options menu (F8) is available. When Standard is selected, the boot menu appears but only under certain conditions: for example, if there is a startup failure, if you are booting up from a repair disk or installation media, if you have configured multiple boot entries, or if you manually configured the computer to use Advanced startup. When Standard is selected, the F8 key is ignored during boot. Windows 8 PCs start up quickly so there isn't enough time to press F8. For more information, see Windows Startup Settings (including safe mode).
Defines the type of boot menu the system will use. ForWindows 10, Windows 8.1, Windows 8 and Windows RT the default is Standard. For Windows Server 2012 R2, Windows Server 2012, the default is Legacy. When Legacy is selected, the Advanced options menu (F8) is available. When Standard is selected, the boot menu appears but only under certain conditions: for example, if there is a startup failure, if you are booting up from a repair disk or installation media, if you have configured multiple boot entries, or if you manually configured the computer to use Advanced startup. When Standard is selected, the F8 key is ignored during boot. Windows 8 PCs start up quickly so there isn't enough time to press F8. For more information, see Windows Startup Settings (including safe mode).
Note
The option is available starting with Windows 8 and Windows Server 2012. You can also use the onetimeadvancedoptions to use the Advanced options (F8) menu (Legacy) one time on the next boot.
bootstatuspolicypolicy
Controls the boot status policy. The boot status policy can be one of the following:
Boot Status Policy | Description |
---|---|
DisplayAllFailures | Displays all errors if there is a failed boot, failed shutdown, or failed checkpoint. The computer will fail over to the Windows recovery environment on reboot. |
IgnoreAllFailures | Ignore errors if there is a failed boot, failed shutdown, or failed checkpoint. The computer will attempt to boot normally after an error occurs. |
IgnoreShutdownFailures | Only ignore errors if there is a failed shutdown. If there is a failed shutdown, the computer does not automatically fail over to the Windows recovery environment on reboot. This is the default setting for Windows 8. |
IgnoreBootFailures | Only ignore errors if there is a failed boot. If there is a failed boot, the computer does not automatically fail over to the Windows recovery environment on reboot. |
IgnoreCheckpointFailures | Only ignore errors if there is a failed checkpoint. If there is a failed checkpoint, the computer does not automatically fail over to the Windows recovery environment on reboot. The option is available starting with Windows 8 and Windows Server 2012. |
DisplayShutdownFailures | Displays errors if there is a failed shutdown. If there is a failed shutdown, the computer will fail over to the Windows recovery environment on reboot. Ignores boot failures and failed checkpoints. The option is available starting with Windows 8 and Windows Server 2012. |
DisplayBootFailures | Displays errors if there is a failed boot. If there is a failed boot, the computer will fail over to the Windows recovery environment on reboot. Ignores shutdown failures and failed checkpoints. The option is available starting with Windows 8 and Windows Server 2012. |
DisplayCheckpointFailures | Displays errors if there is a failed checkpoint. If there is a failed checkpoint, the computer will fail over to the Windows recovery environment on reboot. Ignores boot and shutdown failures. The option is available starting with Windows 8 and Windows Server 2012. |
quietboot [ on | off ]
Controls the display of a high-resolution bitmap in place of the Windows boot screen display and animation.
Controls the display of a high-resolution bitmap in place of the Windows boot screen display and animation.
Note
Do not use the quietboot option in Windows 8 as it will prevent the display of bug check data in addition to all boot graphics.
sos [ on | off ]
Controls the display of the names of the drivers as they load during the boot process. Use sos on to display the names. Use sos off to suppress the display.
Controls the display of the names of the drivers as they load during the boot process. Use sos on to display the names. Use sos off to suppress the display.
lastknowngood [ on | off ]
Enables boot to last known good configuration.
Enables boot to last known good configuration.
nocrashautoreboot [ on | off ]
Disables automatic restart on crash.
Disables automatic restart on crash.
resumeobject (id)
Defines the identifier of the resume object that is associated with this operating system object.
Defines the identifier of the resume object that is associated with this operating system object.
safebootalternateshell [ on | off ]
Uses the alternate shell when booted into Safe mode.
Uses the alternate shell when booted into Safe mode.
winpe [ on | off ]
Enables the computer to boot to Windows PE.
Enables the computer to boot to Windows PE.
onetimeadvancedoptions [ on | off ]
Controls whether the system boots to the legacy menu (F8 menu) on the next boot.
Controls whether the system boots to the legacy menu (F8 menu) on the next boot.
Display Settings
bootuxdisabled [ on | off ]
Disables boot graphics.
Disables boot graphics.
graphicsmodedisabled [ on | off ]
Indicates whether graphics mode is disabled and boot applications must use text mode display.
Indicates whether graphics mode is disabled and boot applications must use text mode display.
graphicsresolution
Defines the graphics resolution, 1024x768, 800x600,1024x600, etc.
Defines the graphics resolution, 1024x768, 800x600,1024x600, etc.
highestmode [ on | off ]
Enables boot applications to use the highest graphical mode exposed by the firmware.
Enables boot applications to use the highest graphical mode exposed by the firmware.
novga [ on | off ]
Disables the use of VGA modes entirely.
Disables the use of VGA modes entirely.
vga [ on | off ]
Forces the use of the VGA display driver.
Forces the use of the VGA display driver.
Hardware Abstraction Layer (HAL) & KERNEL
halfile
Directs the operating system loader to load an alternate HAL file. The specified file must be located in the %SystemRoot%system32 directory.
Directs the operating system loader to load an alternate HAL file. The specified file must be located in the %SystemRoot%system32 directory.
kernelfile
Directs the operating system loader to load an alternate kernel. The specified file must be located in the %SystemRoot%system32 directory.
Directs the operating system loader to load an alternate kernel. The specified file must be located in the %SystemRoot%system32 directory.
Verification Settings
testsigning [ on | off ]
Controls whether Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2008, or Windows Vista will load any type of test-signed kernel-mode code. This option is not set by default, which means test-signed kernel-mode drivers on 64-bit versions of Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2008, and Windows Vista will not load by default. After you run the BCDEdit command, restart the computer so that the change takes effect. For more information, see Introduction to Test-Signing
Controls whether Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2008, or Windows Vista will load any type of test-signed kernel-mode code. This option is not set by default, which means test-signed kernel-mode drivers on 64-bit versions of Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2008, and Windows Vista will not load by default. After you run the BCDEdit command, restart the computer so that the change takes effect. For more information, see Introduction to Test-Signing
nointegritychecks [ on | off ]Disables integrity checks. Cannot be set when secure boot is enabled. This value is ignored by Windows 7 and Windows 8.
disableelamdrivers [ yes | no ]
Controls the loading of Early Launch Antimalware (ELAM) drivers. The OS loader removes this entry for security reasons. This option can only be triggered by using the F8 menu. Someone must be physically present (at the computer) to trigger this option.
Controls the loading of Early Launch Antimalware (ELAM) drivers. The OS loader removes this entry for security reasons. This option can only be triggered by using the F8 menu. Someone must be physically present (at the computer) to trigger this option.
Note
This option should only be used for debugging.
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nx [Optin |OptOut | AlwaysOn |AlwaysOff]
Enables, disables, and configures Data Execution Prevention (DEP), a set of hardware and software technologies designed to prevent harmful code from running in protected memory locations. For information about DEP settings, see Data Execution Prevention.
Enables, disables, and configures Data Execution Prevention (DEP), a set of hardware and software technologies designed to prevent harmful code from running in protected memory locations. For information about DEP settings, see Data Execution Prevention.
DEP Option | Description |
---|---|
Optin | Enables DEP only for operating system components, including the Windows kernel and drivers. Administrators can enable DEP on selected executable files by using the Application Compatibility Toolkit (ACT). |
Optout | Enables DEP for the operating system and all processes, including the Windows kernel and drivers. However, administrators can disable DEP on selected executable files by using System in Control Panel. |
AlwaysOn | Enables DEP for the operating system and all processes, including the Windows kernel and drivers. All attempts to disable DEP are ignored. |
AlwaysOff | Disables DEP. Attempts to enable DEP selectively are ignored. On Windows Vista, this parameter also disables Physical Address Extension (PAE). This parameter does not disable PAE on Windows Server 2008. |
Processor Settings
groupsizemaxsize
Sets the maximum number of logical processors in a single processor group, where maxsize is any power of 2 between 1 and 64 inclusive. By default, processor groups have a maximum size of 64 logical processors. You can use this boot configuration setting to override the size and makeup of a computer's processor groups for testing purposes. Processor groups provide support for computers with greater than 64 logical processors. This boot option is available on 64-bit versions of Windows 7 and Windows Server 2008 R2 and later versions. This boot option has no effect on the 32-bit versions of Windows 7.
Sets the maximum number of logical processors in a single processor group, where maxsize is any power of 2 between 1 and 64 inclusive. By default, processor groups have a maximum size of 64 logical processors. You can use this boot configuration setting to override the size and makeup of a computer's processor groups for testing purposes. Processor groups provide support for computers with greater than 64 logical processors. This boot option is available on 64-bit versions of Windows 7 and Windows Server 2008 R2 and later versions. This boot option has no effect on the 32-bit versions of Windows 7.
Use the groupsize option if you want to force multiple groups and the computer has 64 or fewer active logical processors. For more information about using this option, see Boot Parameters to Test Drivers for Multiple Processor Group Support.
groupaware [ on | off ]
Forces drivers to be aware of multiple groups in a multiple processor group environment. Use this option to help expose cross-group incompatibilities in drivers and components. Processor groups provide support for computers with greater than 64 logical processors. This boot option is available on 64-bit versions of Windows 7 and Windows Server 2008 R2 and later versions. This boot option has no effect on the 32-bit versions of Windows 7. You can use the groupaware option and the groupsize option to test driver compatibility to function with multiple groups when computer has 64 or fewer active logical processors.
Forces drivers to be aware of multiple groups in a multiple processor group environment. Use this option to help expose cross-group incompatibilities in drivers and components. Processor groups provide support for computers with greater than 64 logical processors. This boot option is available on 64-bit versions of Windows 7 and Windows Server 2008 R2 and later versions. This boot option has no effect on the 32-bit versions of Windows 7. You can use the groupaware option and the groupsize option to test driver compatibility to function with multiple groups when computer has 64 or fewer active logical processors.
The groupaware on setting ensures that processes are started in a group other than group 0. This increases the chances of cross-group interaction between drivers and components. The option also modifies the behavior of the legacy functions, KeSetTargetProcessorDpc, KeSetSystemAffinityThreadEx, and KeRevertToUserAffinityThreadEx, so that they always operate on the highest numbered group that contains active logical processors. Drivers that call any of these legacy functions should be changed to call their group-aware counterparts (KeSetTargetProcessorDpcEx, KeSetSystemGroupAffinityThread, and KeRevertToUserGroupAffinityThread).
For more information about using this option, see Boot Parameters to Test Drivers for Multiple Processor Group Support.
maxgroup [ on | off ]
Maximizes the number of groups created in a processor group configuration. The maxgroup on setting assigns NUMA nodes to groups in a manner that maximizes the number of groups for a particular computer. The number of groups created is either the number of NUMA nodes the computer has, or the maximum number of groups supported by this version of Windows, whichever is smaller. The default behavior (maxgroup off) is to pack the NUMA nodes tightly into as few groups as possible.
Maximizes the number of groups created in a processor group configuration. The maxgroup on setting assigns NUMA nodes to groups in a manner that maximizes the number of groups for a particular computer. The number of groups created is either the number of NUMA nodes the computer has, or the maximum number of groups supported by this version of Windows, whichever is smaller. The default behavior (maxgroup off) is to pack the NUMA nodes tightly into as few groups as possible.
Use the maxgroup option if you want to use multiple groups, the computer has 64 or fewer active logical processors, and the computer already has multiple NUMA nodes. This option can also be used to alter the default group configuration of a computer that has more than 64 logical processors.
Processor groups provide support for computers with greater than 64 logical processors. This option is available on 64-bit versions of Windows 7 and Windows Server 2008 R2 and later versions. This boot option has no effect on the 32-bit versions of Windows 7.
For more information about using this option, see Boot Parameters to Test Drivers for Multiple Processor Group Support.
onecpu [ on | off ]
Forces only the boot CPU to be used in a computer that has more than one logical processor. For example, the following command configures the current operating system loader to use one processor.
Forces only the boot CPU to be used in a computer that has more than one logical processor. For example, the following command configures the current operating system loader to use one processor.
Memory Related Settings
![Edit Boot Options Windows 7 Noexecute Optin Factory Reset Edit Boot Options Windows 7 Noexecute Optin Factory Reset](/uploads/1/1/4/0/114030771/830316687.png)
increaseuservaMegabytes
Specifies the amount of memory, in megabytes, for user-mode virtual address space.
Specifies the amount of memory, in megabytes, for user-mode virtual address space.
On 32-bit editions of Windows, applications have 4 gigabyte (GB) of virtual address space available. The virtual address space is divided so that 2 GB is available to the application and the other 2 GB is available only to the system.
The 4-gigabyte tuning feature, enabled with the increaseuserva option, allows you to increase the virtual address space that is available to the application up to 3 GB, which reduces the amount available to the system to between 1 and 2 GB. The BCEdit /set increaseuservaMegabytes command can specify any value between 2048 (2 GB) and 3072 (3 GB) megabytes in decimal notation. Windows uses the remaining address space (4 GB minus the specified amount) as its kernel-mode address space.
See 4-Gigabyte Tuning (Windows) for additional information about this feature.
nolowmem [ on | off ]Controls the use of low memory. When nolowmem on is specified, this option loads the operating system, device drivers, and all applications into addresses above the 4 GB boundary, and directs Windows to allocate all memory pools at addresses above the 4 GB boundary. Note that the nolowmem option is ignored in Windows 8, Windows Server 2012, and later versions of Windows.
pae [ Default | ForceEnable | ForceDisable ]
Enables or disables Physical Address Extension (PAE). When PAE is enabled, the system loads the PAE version of the Windows kernel.
Enables or disables Physical Address Extension (PAE). When PAE is enabled, the system loads the PAE version of the Windows kernel.
The pae parameter is valid only on boot entries for 32-bit versions of Windows that run on computers with x86-based and x64-based processors. On 32-bit versions of Windows (prior to Windows 8) , PAE is disabled by default. However, Windows automatically enables PAE when the computer is configured for hot-add memory devices in memory ranges beyond the 4 GB region, as defined by the Static Resource Affinity Table (SRAT). Hot-add memory supports memory devices that you can add without rebooting or turning off the computer. In this case, because PAE must be enabled when the system starts, it is enabled automatically so that the system can immediately address extended memory that is added between restarts. Hot-add memory is supported only on Windows Server 2008, Datacenter Edition; Windows Server 2008 for Itanium-Based Systems; and on the datacenter and enterprise editions of all later versions of Windows Server. Moreover, for versions of Windows prior to Windows Server 2008, hot-add memory is supported only on computers with an ACPI BIOS, an x86 processor, and specialized hardware. For Windows Server 2008 and later versions of Windows Server, it is supported for all processor architectures.
On a computer that supports hardware-enabled Data Execution Prevention (DEP) and is running a 32-bit version of the Windows operating system that supports DEP, PAE is automatically enabled when DEP is enabled and, on all 32-bit versions of the Windows operating system, except Windows Server 2003 with SP1, PAE is disabled when you disable DEP. To enable PAE when DEP is disabled, you must enable PAE explicitly, by using /set nx AlwaysOff and /set pae ForceEnable. For more information about DEP, see Boot Parameters to Configure DEP and PAE.
For more information about using the pae parameter and the other parameters that affect PAE configuration, see Boot Parameters to Configure DEP and PAE.
removememoryMegabytes
Removes memory from the total available memory that the operating system can use.
Removes memory from the total available memory that the operating system can use.
For example, the following command removes 256 MB of memory from the total available to the operating system associated with the specified boot entry.
truncatememoryaddressLimits the amount of physical memory available to Windows. When you use this option, Windows ignores all memory at or above the specified physical address. Specify the address in bytes.
For example, the following command sets the physical address limit at 1 GB. You can specify the address in decimal (1073741824) or hexadecimal (0x40000000).
Additional Settings
disabledynamictick [ yes | no ]
Enables and disables dynamic timer tick feature.
Enables and disables dynamic timer tick feature.
Note
This option should only be used for debugging.
forcelegacyplatform [ yes | no ]
Forces the OS to assume the presence of legacy PC devices like CMOS and keyboard controllers.
Forces the OS to assume the presence of legacy PC devices like CMOS and keyboard controllers.
Note
This option should only be used for debugging.
pciexpress [ default | forcedisable]
Enables or disables PCI Express functionality. If the computer platform supports the PCI Express features and the ACPI _OSC method grants control of the features to the operating system, Windows enables the advanced features through the PCI Express Native Control feature (this is the default). Use the forcedisable option to override the advanced PCI Express features and use legacy PCI Express behavior. For more information, see Enabling PCI Express Native Control in Windows.
Enables or disables PCI Express functionality. If the computer platform supports the PCI Express features and the ACPI _OSC method grants control of the features to the operating system, Windows enables the advanced features through the PCI Express Native Control feature (this is the default). Use the forcedisable option to override the advanced PCI Express features and use legacy PCI Express behavior. For more information, see Enabling PCI Express Native Control in Windows.
tpmbootentropy [ default | ForceEnable | ForceDisable]
Determines whether entropy is gathered from the trusted platform module (TPM) to help seed the random number generator in the operating system.
Determines whether entropy is gathered from the trusted platform module (TPM) to help seed the random number generator in the operating system.
tscsyncpolicy [ Default | Legacy | Enhanced ]
Controls the times stamp counter synchronization policy. This option should only be used for debugging.
Controls the times stamp counter synchronization policy. This option should only be used for debugging.
usefirmwarepcisettings [ yes | no ]
Enables or disables the use of BIOS-configured peripheral component interconnect (PCI) resources.
Enables or disables the use of BIOS-configured peripheral component interconnect (PCI) resources.
useplatformclock [ yes | no ]
Forces the use of the platform clock as the system's performance counter.
Forces the use of the platform clock as the system's performance counter.
Note
This option should only be used for debugging.
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uselegacyapicmode [ yes | no ]
Used to force legacy APIC mode, even if the processors and chipset support extended APIC mode.
Used to force legacy APIC mode, even if the processors and chipset support extended APIC mode.
useplatformtick [ yes | no ]
Forces the clock to be backed by a platform source, no synthetic timers are allowed. The option is available starting in Windows 8 and Windows Server 2012.
Forces the clock to be backed by a platform source, no synthetic timers are allowed. The option is available starting in Windows 8 and Windows Server 2012.
Note
This option should only be used for debugging.
xsavedisable [ 0 | 1 ]
When set to a value other than zero (0), disables XSAVE processor functionality in the kernel.
When set to a value other than zero (0), disables XSAVE processor functionality in the kernel.
x2apicpolicy [ enable | disable ]
Enables or disables the use of extended APIC mode, if supported. The system defaults to using extended APIC mode if it is available.
Enables or disables the use of extended APIC mode, if supported. The system defaults to using extended APIC mode if it is available.
Debugger Settings
To work with the debugger settings, use the following commands.
Command | Description |
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BCDEdit /bootdebug | The /bootdebug boot option enables or disables boot debugging of the current or specified Windows operating system boot entry. |
BCDEdit /dbgsettings | The /dbgsettings option sets or displays the current global debugger settings for the computer. To enable or disable the kernel debugger, use the BCDEdit /debug option. |
BCDEdit /debug | The /debug boot option enables or disables kernel debugging of the Windows operating system associated with the specified boot entry or the current boot entry. |
Hypervisor Debugger Settings
Use the BCDEdit / hypervisorsettings option to set or display the hypervisor debugger settings for the system. For more information, see BCDEdit /hypervisorsettings.
hypervisordebug [ On | Off ]
Controls whether the hypervisor debugger is enabled.
Controls whether the hypervisor debugger is enabled.
Hypervisor Settings
hypervisoriommupolicy [ default | enable | disable]
Controls whether the hypervisor uses an Input Output Memory Management Unit (IOMMU).
Controls whether the hypervisor uses an Input Output Memory Management Unit (IOMMU).
hypervisorlaunchtype [ Off | Auto ]
Controls the hypervisor launch options. If you are setting up a debugger to debug Hyper-V on a target computer, set this option to Auto on the target computer. For more information, see Create a Virtual Machine with Hyper-V.
Controls the hypervisor launch options. If you are setting up a debugger to debug Hyper-V on a target computer, set this option to Auto on the target computer. For more information, see Create a Virtual Machine with Hyper-V.
hypervisorloadoptions NOFORCESNOOP [ Yes | No ]
Specifies whether the hypervisor should enforce snoop control on system IOMMUs.
Specifies whether the hypervisor should enforce snoop control on system IOMMUs.
hypervisornumprocnumber
Specifies the total number of logical processors that can be started in the hypervisor.
Specifies the total number of logical processors that can be started in the hypervisor.
hypervisorrootprocnumber
Specifies the maximum number of virtual processors in the root partition and limits the number of post-split Non-Uniform Memory Architecture (NUMA) nodes which can have logical processors started in the hypervisor.
Specifies the maximum number of virtual processors in the root partition and limits the number of post-split Non-Uniform Memory Architecture (NUMA) nodes which can have logical processors started in the hypervisor.
hypervisorrootprocpernodenumber
Specifies the total number of virtual processors in the root partition that can be started within a pre-split Non-Uniform Memory Architecture (NUMA) node.
Specifies the total number of virtual processors in the root partition that can be started within a pre-split Non-Uniform Memory Architecture (NUMA) node.
hypervisoruselargevtlb [ yes | no]
Increases virtual Translation Lookaside Buffer (TLB) size.
Increases virtual Translation Lookaside Buffer (TLB) size.
Emergency Management Services
The BCDEdit /ems option enables or disables Emergency Management Services (EMS) for the specified operating system boot entry. For more information, see BCDEdit /ems.
The BCDEdit /emssettings option sets the global Emergency Management Services (EMS) settings for the computer. For more information, see For more information, see BCDEdit /emssettings.
Event Logging
The BCDEdit /event command enables or disables the remote event logging for the specified boot entry. For more information, see BCDEdit /event.
For more information about specific BCD elements and boot options, you can use the commands BCDEdit /? OSLOADER and BCDEdit /? TYPES OSLOADER.
To view the current boot entries and their settings, use the bcdedit /enum command. This command displays the active boot entries and their associated globally unique identifiers (GUID). Use the identifiers with the /set command to configure options for a specific boot entry.
To delete a boot option value that you have set, use the /deletevalue option. The syntax for the command is as follows:
bcdedit /deletevalue [{ID}] datatatype
For example, if you change the processor group option, groupsize, to a new value for testing purposes, you can revert to the default value of 64 by typing the following command and then restarting the computer.
Any change to a boot option requires a restart to take effect. For information about commonly used BCDEdit commands, see Boot Configuration Data Editor Frequently Asked Questions.
Requirements
Minimum supported client: Windows Vista
Minimum supported server: Windows Server 2008