3 ms·
Intuitively because if you're just writing zero bytes everywhere, and there's a lab that can detect the difference between a zero that used to be a one and a ze
by pessimizer 3y ago
Intuitively because if you're just writing zero bytes everywhere, and there's a lab that can detect the difference between a zero that used to be a one and a zero that was always a zero, they can get the entire drive.
When I get a drive, I LUKS encrypt it and fill it with zeros before throwing a filesystem on it, which results in the drive looking entirely like random nothing. The privacy test that it definitely fails is that disks don't ever look like that unless they're encrypted, but I'm not worried about anybody finding old drives.
- Bedon292 3y agoMy current understanding is that it is no longer possible to detect those differences on modern drives. I believe it has come down to density. Where it was possible when density was much lower, and you could detect some residual information from the wide tracks. But things are so dense now those residuals aren't physically possible.
- Gordonjcp 3y ago> there's a lab that can detect the difference between a zero that used to be a one and a zero that was always a zero No, there isn't, and hard disks haven't worked that way since before Windows existed.