How to enter win10 security mode

The specific method is as follows:
1, using Win10 mirror U disk boot or CD burning to make a Win10 boot U disk or CD;
2, use the above prepared media to start the computer To the following interface -
3, do not click on any function of the interface, directly press shift F10 to open the command prompt;
4, execute the following command (note the space):
bcdedit /set {default} bootmenupolicy Legacy
5, restart the computer, you can press F8 to enter the safe mode option menu (such as the first illustration) before the boot screen (Microsoft blue logo).
Although this method is a little troublesome, it can finally be saved. . And if your computer does not have "quick start" enabled, then this setting is "once and for all". In the future, you can press F8 directly when you boot into safe mode, instead of having to enter the system before setting it up.
If you want to restore to the default state, you can run the following command in the "Command Prompt" mode in the administrator mode:
bcdedit /set {default} bootmenupolicy standard
Then open "quick start" again Just fine.