I'm selling an old Pentium II system that's just taking up space and have been told that a simple format isn't necessarily the most secure way to remove any personal information from it.
Any suggestions on how to effectively wipe a hard drive prior to sale?
use dm at zero pulling....
The best way is to degauss the hard drive if that is not possible get a program that starts with replacing all of the data on the hard drive with random 0s and 1s and do this at minimum 7 times. There are a lot of different programs but the one on sourceforge is free and is probably the best one for the cost.
Good luck and remember the only safe way is to replace the hard drive then destroy the old one.