@parados,
No, go back and look, the primary drives, which were the same drives that we use today, did not survive. However the non primary or experimental drives did. Most people store their most valuable computer data in multiple forms, as did the owner of this fallout shelter. So one could say that the operating system drive in the computer/s did not survive, but at least one of the backup system drive types did. Your challenge is to ID the drive type that survived.
I might as well give you the answer, at this point, and I will if you ask....
So do you give up?
Or do you wish to complete the riddle on your own?