In the second answer of this question about disk cloning with 'dd', I read this command:
dd if=/dev/zero of=/mnt/hdb/zero
It is supposed to write '0' in the unused space of drive 'hdb', however I can't find any documentation about this
/zero tag appended to the mounted hard drive.
I understand the first part (
if=/dev/zero is a virtual device that "creates" zeros), but what does
/mnt/hdb/zero mean exactly? Does this really map to the unused space of a drive? Is this a typo?
I don't want to run it on my drive before being sure it won't do any harm...