Guided install erase data
I am currently installing Wheezy and the "Erasing data" is taking a long
time for the encrypted LVM install.
By a long time I mean 5 hours for 5% completed on erasing data.
I was wondering what this process is actually doing.
I have found with my job (Computer Forensic Specialist), that it only
takes 1 overwrite to securely wipe data. As well as DOD revision stating
1 overwrite versus the 8 it used to be on disks manufactured after 2001.
The command I use at work is dd bs=4096 if=/dev/zero of=/dev/sd* and on
a 2 TB hard disk takes 4 hours to completely wipe.
I am currently testing a block size of half the disk buffer to see if
that increases speed further.
With that said, could I get some explanation of what is really happening
with this process? I think it would benefit all Debian users to have
this time consuming issue looked into.