Properly wiping a hard drive ?

[Markku Kolkka]

9.10.2010 11:27, Linuxguy123 kirjoitti:
> # hdparm --security-erase NULL /dev/sdd
> security_password=""
>
> /dev/sdd:
>   Issuing SECURITY_ERASE command, password="", user=master
> ERASE_PREPARE: Invalid exchange
>
> Why ????

The reason is explained in the Wiki article that mike cloaked referred: 
https://ata.wiki.kernel.org/index.php/ATA_Secure_Erase#Executing_security_erase_without_setting_a_password
Using NULL password doesn't work. You must set and use a password.

-- 
	Markku Kolkka
	markku.kolkka at iki.fi