1
vote
1answer
47 views

DD with a specific pattern

I was watching this Defcon video and around 4:30 he shows a custom pattern of drive wiping — the drive is filled with a constant text pattern. Whether he is joking or not, is this possible? How would ...
0
votes
1answer
95 views

dd and rm -r commands

For me, the following commands do exactly the same thing: dd if=/dev/zero of=/dev/sd1 dd if=/dev/null of=/dev/sd1 rm -r /dev/sd1/* meaning, the result of their application is the same. Or least, ...
8
votes
1answer
189 views

How to re-size partitions in a complete hard drive image?

I have taken a complete image of a hard drive using: dd if=/dev/sda of=/home/user/harddriveimg bs=4M It would seem to me, that I should be able to re-size the partitions within it after suitably ...
1
vote
2answers
546 views

Writing data on particular sectors or blocks

Not sure if it's better suited for superuser of serverfault boards, let me know. I have a drive which I repartitioned with fdisk. Initially there was only one big partition, now there are a number ...
3
votes
4answers
2k views

Comparison of raw block devices

Is there a utility (or some shell magic) that allows me to compare two block devices? Details: I have one large (0.5 TB) RAID device that I've backed up to a slightly larger SATA device using dd. ...