Open the secret key by hitting the U disk

To create a U disk to open a secret key to the detailed steps:

1, the first in the computer to create a txt text, in the input of the text inside the split line:

The following g: To change to your USB disk letter, if you are the U disk letter F, change F:,

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@echo off

If not exist g:aa.txt shutdown-s-T 5-c "Please insert the startup key or you will not be able to log on to the system"

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(Pay attention to the space, do not leak) and then save OH

Aa.txt is the equivalent of a password, AA you can change to other, such as Asfafaf.txt, of course, you have to build a U disk in the same file, such as here you have to build a aa.txt in the U-disk text document. If this file is not available, the computer will be turned off when you log on to the system after powering on.

The above 5 represents 5 seconds after the shutdown, personal advice smaller the better, because there is no U disk in the file, the computer will be shut down in a short time, not to those who do not have U-disk file response time. Of course, this number is greater than 0.

2. Rename this file, especially if the extension is to. bat files (such as A.bat), the dialog box appears, and the selection is. After the change icon is:

Note: If the icon does not change after renaming, that is because the system by default is to turn off the extension, you can open the "My Computer" (or computer), select "Tools-Folder Options-View", in the advanced settings to remove the "hide the known file type extension", then click OK, and then change the name.

3. The next step is to add the file to the startup item. Point "Start-run" (Shortcut window+r), enter "regedit",

4, find: Hkey_local_machinesoftwaremicrosoftwindowscurrentversionrun

5, in the right window of the right button "new-String value"

6, the name casually take, but not too long, but also the English half-width state input. And then right click on this option "modify",

7, in the numerical data to fill in the just created the. bat file (I just created here is: Open the secret key. bat) path. Must be a full path. (I'm here on the desktop) ok. Close Registry Editor.

8, so far, all the steps have been done.

9, note: no u disk file will appear as shown below,

10, after setting up the first time to enter the system will appear as a picture of the situation, hit the hook to determine the point.

After several steps of operation, a complete U disk key on the production is completed, now you can use the U disk to open the computer, you can also lock the computer through a U disk, others do not have this U disk, you can not turn on the computer, so that the purpose of protecting the computer data

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