Windows 2012 R2 BOOT


After installing MS Patch KB2993651 I have problems for booting Windows 2012 R2 server

I am not so familial with Windows Server 2012 R2

Can I still boot in Safe Mode with F8 ?
An uninstall the patch?
Is there another way to boot the server to remove this patch ?

Thank you
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Here is a detailed how to on how to configure and boot into safe mode:

Once completed, please restart your computer, then press F8 to enter setup screen upon startup, then press F4 or 4 to enter safe mode.
gadsadAuthor Commented:
All these options for safe mode if Windows 2012 R2 boots normaly

But what if Windows 2012 R2 cannot boot normaly ?
The F8 command do not work? how to activate it?

Well there is one way to do this (maybe many others)
Boot to the Server 2012 disc and you can select Troubleshoot and then Command Prompt.
You type in the commands:
bcdedit /set {bootmgr} displaybootmenu Yes
bcdedit /set {bootmgr} timeout 15

When you restart the computer press F8 and you should see the advanced menu.

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