Recovering the security mode under F8 in Windows 8

In Windows 8, we will not be able to enter safe mode by pressing F8 at boot time, which is limited by the new Windows 8 security boot mechanism. The security mode is very useful in some cases. The new system does not know why this function is directly killed. It is inconvenient to use it, but now there is a big god online to find a way, if you want to press the F8 key to enter the safe mode by booting. Can be achieved by the following steps.
How to find the security mode under F8 in Windows 8?
1. Start the command prompt as administrator

2. Enter < in the open command prompt window. Br>bcdedit /set {default} bootmenupolicy legacy

3, enter to confirm. After performing this operation, restart the computer and press the F8 key to see the traditional advanced startup options.

4. If you want to return to the Windows 8 default startup mode, you can do so by entering the following command.
bcdedit /set {default} bootmenupolicy standard