I have a pre-fail drive, and while I'm waiting for replacement I am trying to do full back up to two smaller drives. Given that drive is 3TG and ones I have are 1.5 and 2TB, is this a correct way to do the backup?
dd if=/dev/sda of=/mnt/sda-1G-1270 bs=1G count=1270
then plug in 2nd drive, mount it, and do:
dd if=/dev/sda of=/mnt/sda-1G-rest bs=1G skip=1270
and to recover:
dd if=/mnt/sda-1G-1270 of=/dev/sda bs=1G count=1270 dd if=/mnt/sda-1G-rest of=/dev/sda bs=1G seek=1270
will that work?..