You can use over write programm like ErAce form erace.it
How do I erase a password that I forgot
how do
Reinstalling Windows will not erase the hard drive unless you tell it to reformat the hard drive before reinstalling the operating system. You will have to reinstall all your programs that were installed prior to reinstall but all your saved files will still be there.
Use ErAce from erace.it
To completely erase the data on the hard drive.
In order to completely wipe a hard drive on a Canon branded copier, one must format the hard drive. Formatting the hard drive will erase all information. The operating system of the copier can then be re-installed.
You want to format your hard drive, thats all you need to do to erase everything stored. Take all precautions to transfer files you do want to keep on another drive. This is also a last ditch resort if you have a virus you cant kill. http://lifehacker.com/157578/geek-to-live--how-to-format-your-hard-drive-and-install-windows-xp-from-scratch
You can use a Mac shredder software to completely wipe Mac hard drive in single go. Note: the ultimate state to permanently erase files or wipe out a hard drive clean is to let all the data be overwritten.
Use ErAce from erace.it
Yes. In short, virtually everything, and anything. It all depends on what the virus what built to do.
Reformat hd. On the XMB go into the settings menu and you will find "Reformat hard drive".
The 'format' command will appear to erase the hard-drive HOWEVER - ALL it does is erase the reference track. The data will still be on the drive (and can be recovered). There are programs that will physically write either random characters or just zeros to every sector of the drive - over-writing all the data that was stored.
It wipes all your data off your hard disk.
It can erase your hard drive!They can delete your files.