I am using an external 1 TB WD hard drive with Advanced Format (4096 bytes sector size). What is the recommended value for the bs option in dd? Should I use dd bs=4096? And if I get this value "wrong" is there any data problem that could appear or is this option only in terms of speed?
Also I am securely wiping the hard drive, could I not fully wipe the drive if I am using the bs option?
Sector size (logical/physical): 512 bytes / 4096 bytes