How to quickly enter Win8 security mode?

  
1. Start a command prompt as an administrator.

2. In the command prompt window that opens, type
bcdedit /set {default} bootmenupolicy legacy

3, press Enter to confirm, restart the computer after performing the operation, press F8 You can see the traditional advanced boot options.
#FormatImgID_1#
4, if you want to return to Windows 8 default startup mode, you can do this by entering the following command.
bcdedit /set {default} bootmenupolicy standard

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