3 ms·

It's unplausible for unused space on the harddisk to be random due to the way filesystems work. Random data is likely to be encrypted data.

• epochwolf 15y ago
  Except that some operating systems have a secure erase option for free space (OSX for example).
• kijin 15y ago
  If you use TrueCrypt properly, most unused space on your hard disk will be filled with random bits, whether or not you have a hidden OS in there.