Securely erasing all data from a hard drive
I am using Windows 7 64bit on normal HD drives. SATA 2. I don't have a boot disc or copy of Windows.
I want to complete format both my HD and leave nothing on them (including Win 7) can I do this using a command line or do I need some special dos boot disc?
I also want to COMPLETELY erase the HD - I want to fully erase all my disc contents. I have heard all discs contain a history (police, forensics) I want it fully clean.