How to encrypt the whole file in PC/Drive but user can still open the pc

[72]

i was making a thing like wannacry virus for a education purpose and I was thinking how to encrypt whole pc/drive data but idk how
Pls help

[100]

You have a lot of open-source ransomware on github written in a lot of languages which you can use as reference to your project.
Just search there with the language you want to use and you'll get the general idea.

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