Low level formating

[Sem]

im about to sell some hard disks and i was wondering if a single low level format using HDDGURU should be enough to wipe the disk so its not recoverable by average users

or should i do a couple of DoD 5220.22-M passes first before the low level format

 

[Sem]

oops forgot to add the tool to my original post

is that Boot And Nuke just a wiper or low level formatter as well

i want to do a low level format so the drive appears "new"