Enable the F8 key for booting into Safe Mode in Windows 8

First open Command Prompt as Administrator. Then key in.

bcdedit /set {default} bootmenupolicy legacy

This will bring back the Windows 7 screen when you tap F8 during boot including the option to go into Safe Mode. Safe Mode in invaluable when doing any malware removal.

To put it back to the default Windows 8 boot screen (not sure why you want to do that given the usefulness of the older menu option), key in this command in the command line .

bcdedit /set {default} bootmenupolicy standard