[orvtech]

Yeah, it was my bad... I should have replaced the HDD with another one and kept his old data while trying this.

I even use testdisk in an attempt to recover the HDD but had no luck.

[cyberfart]

I don't think recovery after dd would be possible. Also, why if=/dev/random and not if=/dev/zero?

[orvtech]

It is a link of this chains of bad decisions but I did not wanted the information to be recovered in any way.

Testdisk managed to recover most information except that some part of the GPT were corrupted.

[orvtech]

Initially I though this lock resided on the disk only, specially since it had a nice UI. I thought "this cant be the bios"

[X-Istence]

Yay for UEFI.