chris lee wrote:
> basically im trying to find a way to make my computer only work if a
> certain SD card is installed.
>
> i also want all the data in that computer locked so that if the drive
> is installed in another computer or a LiveCD is used the data will be
> completely unviewable.
>
> is this possible?
>
There was a project a while back to do encrypted filesystems. You could
probably rig it to look to the SD card for the decryption key. There are
limitations, but search on "Linux encrypted filesystem" for a FAQ. Root
and swap are not encryptable, but a loopback mounted encrypted
filesystem or an encrypted partition should work.
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