I am currently running nwipe on a brand new external USB hard drive, using the default setting if DoD Short. The hard drive is brand new, USB 3.0, and 5TB in size.
When it started 14 Hours ago, the throughput was somewhere around 120 MB/s, with the estimated time around 48 hours. Since then, the throughput has dropped down to 62 MB/s, and the time remaining keeps increasing (due to the throughput slowly decreasing).
I have not been able to find any estimates to help determine whether this seems correct, or if it is going slowly. Does this throughput seem correct for a USB 3.0 external hard drive?
I understand DoD Short is overkill, but I did a single pass of dd /dev/zero, but when I opened the drive in xxd, there was non-zero data at the very end of the drive! So now I want to be sure everything is off of there.
Thanks