How does the Win8 system limit disk access?

Steps:
1. Click on the desktop and click “Win ​​+ R ” button to bring up the “Run window” and enter “lded; gpedIT.msc ” then click “OK>;

2 In the “Local Group Policy Editor”, select “User Configuration”, “Administrative Templates”, “Windows Components”, “Windows Explorer”;

3, find the option to prevent access to the drive from "My Computer", double click to open it;

4, select "Allow", select the option as the partition you want to disable, click <;OK  

5. After restarting the computer, or using the command “gpupdate /force ” to refresh the group policy, opening the partition again will prompt the restricted access.