[CentOS] Need a Centos 6 USB hard drive recovery procedure

[Rock]

On Sat, 01 Jun 2013 16:40:46 +0000, Rock wrote:

> Now comes the biggie, backing up the entire 150MB disk:
> Q: Maybe I should have used the "conv=noerror" option
> as suggested in the dd wikipedia entry?
> $ sudo dd if=/dev/sdc1 of=/mnt/image.dd bs=1M

The dd finished backing up after about 3 hours.

$ sudo dd if=/dev/sdc1 of=/mnt/image.dd bs=1M
==> 152625+1 records in
==> 152625+1 records out
==> 160039240704 bytes (160 GB) copied, 9750.86 s, 16.4 MB/s

Although I can't see to change the permissions of the result:
$ ls -l
==> -rwxrwxrwx. 1 root root 160039240704 Jun  1 12:13 image.dd
$ sudo chmod uog=r /mnt/image.dd
$ ls -l
==> -rwxrwxrwx. 1 root root 160039240704 Jun  1 12:13 image.dd
$ sudo chmod 555 ./image.dd
$ ls -l
==> -rwxrwxrwx. 1 root root 160039240704 Jun  1 12:13 image.dd

At this point, some people said to try to recover using 
the backup; while others said I should work off the original disk.

I think I'll try the testdisk recover procedure first.