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Enable F8 Safe Mode Boot Menu


Kalju

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Windows 10 offers fantastic boot methods compared to some earlier operating systems, but sometimes You may need to restart Your computer in safe mode.
Also there is many ways, how to do that. But sometimes You cannot use them, because Your pc simply freezes up or don't run in normal mode. So You need try some other method, for example boot in safe mode or in safe mode with networking.
But the opportunity to access the F8 boot menu is removed.
This boot options menu allows you to enter safe mode or access other recovery tools that would otherwise only be available after booting in to Windows or using recovery media (i.e the install disc).
If you think that you may need to enter safe mode when Windows is no longer able to boot, you can sacrifice a couple of seconds at boot and enable the F8 safe mode menu.
There is many opportunities, how to restore this F8 function, but I do not want to retell about them. You can read it using links, what You can find below.

  • I wanted simplify this procedure. So here is two simple scripts - bat or cmd files.
  • Simply download and unzip to desktop or somewhere else. To setup F8 new function, siply right click on file "SafeMode_F8.bat" and "Run as administrator".  Your computer will restart and after restart this mode is activated.
  • If You want to restore default options click with mouse right button on file "SafeMode_Default.bat", your pc restarts and everything is restored as they were before.

(If You use UAC, then may be needed turn it off before to run given files. After restart  turn UAC on again, if You desire.)

  • Use: The computer during startup, press the F8 key repeatedly until you hear a beep.

feheXGL.jpg
 
 Download: attached file or from datafilehost

Site: http://www.datafilehost.com
Sharecode[?]: /d/9b8a6d15

 
How to do everything manually and more...

http://www.windows10forums.com/articles/enable-f8-safe-mode-boot-menu.8/
http://www.7tutorials.com/4-ways-boot-safe-mode-windows-10
http://www.tenforums.com/tutorials/2304-safe-mode-start-windows-10-a.html

 

Edited: 17.02.2016

 

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How to restore the Last Known Good Configuration feature in Windows 8, Windows 8.1 and Windows 10

In previous versions of Windows, there was an extremely useful feature called Last Known Good Configuration which allowed you to quickly fix a broken registry hardware configuration to the one when Windows last booted properly. It was very handy in the situation I've described above. Last Known Good Configuration stored a copy of the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet key which contains information about all Windows services and drivers.

Selecting Last Known Good Configuration at startup from F8 options did 2 things:
- It restored the hardware configuration in the registry control set indicated by the LastKnownGood key instead of the default
- It restored the device drivers too of the last working configuration, should a newly installed device driver make Windows unbootable

In favor of new additions, this wonderful feature was disabled in Windows 8, Windows 8.1 and Windows 10. The exciting news is that you can still enable it! Let's see how it can be done.

  1. Open the Registry editor
  2. Go to the following key:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Configuration Manager
  1. Create a new DWORD value at the above key called BackupCount by right clicking in the right pane and choosing New -> DWORD value (32-bit) and set its value to 1 or 2, depending on the number of backups you wish to store in the registry. I recommend a value of 2. If the BackupCount value already exists, then simply double click it and set its value to 2.
  2. Now you must create a sub-key. Right click on the 'Configuration Manager' key in the left pane and select New -> Key called LastKnownGood. Then create a new DWORD value in the right pane called Enabled and set it to 1 (0 means disabled, 1 means enabled).

a1oPIGh.jpg

 

6PVpKRE.png

Now the Last Known Good Configuration feature is enabled and will start backing up your HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet registry branch at every successful boot.

How to access the Last Known Good Configuration

To access the Last Known Good Configuration, run the following command at an elevated command prompt:

BCDEdit /SET "{Current}" BootMenuPolicy Legacy

 More BCEDIT settings/commands - https://msdn.microsoft.com/en-us/library/windows/hardware/ff542202(v=vs.85).aspx

or look at the end of current post.

 The above command will enable access to the regular legacy boot menu via the F8 key. Now restart your computer and if computer begins to load start configuration, hold (sometimes not works) or hit on F8 key (several times), you will soon see the following image:

Teq0HVv.png

Make Your selection, how to boot. If You don't see this image, run command:

bcdedit /set {bootmgr} displaybootmenu yes

 

If You want to reset F8 to default settings, run command:

bcdedit /set {bootmgr} displaybootmenu no

 

You may be also interested in: Enable F8 Safe Mode Boot Menu

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