I accidentally locked an HDD with an ATA password, trying to issue a secure erase command. It was on Linux, I entered this command :
# hdparm --security-erase PWD /dev/sda
So the password is PWD (no need to keep it secret as it doesn't protect anything). Fine. But now the drive is locked, the BIOS asks for the password when I boot with the drive plugged, "PWD" doesn't work, and I think I found why : the BIOS accepts only lower-case letters.
I tried to remove the drive, boot on a live USB (Fedora) and plug the HDD, but the system doesn't recognize the drive. And I can't boot with the drive plugged : the BIOS won't even let me in the setup screen to boot on the USB stick, without the ATA password.
How can I unlock it if I know the password but the BIOS doesn't accept it ?