How to let the computer only plug in its own USB drive to start

First, insert your U disk on the computer and confirm the letter of the U disk. Mine is G-disk, as pictured.

Second, open the extension that displays the file.

The steps are: My Computer--tools--Folder Options--View--Remove the "Hide extensions for known file types" √. As shown in the figure

A new "boot. bat" file is created outside the system disk (my C disk).

Copy code in: "If not exist I:eckert.lj shutdown-s-T 5-c"

If you do not have a U disk you do not have the right to use the computer.

Where (I:eckert.lj i for U disk letter, my for G disk)

In turn:

Start--run--gpedit.msc--Computer Configuration--windows Settings-script startup shutdown-start-Add.

As shown in the figure

That way, it's all set up.

The next boot. If your USB drive is not on the computer, then the computer will automatically shutdown after 5 seconds of startup.

Attention matters

If the USB disk is lost, boot directly into safe mode, delete the "boot. bat" inside the policy group.

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