dd stuck trying to recover a dead disk

[vilman]

Hi,

lost a disk, trying to recover it by using dd, and hopefully being able to repair the partition on a new disk.

The disk is an iOmega external USB, have tried to dismantle it to make it internal to have a better control of the disk (like 'SMART ctl'...) but it is welded.

Run command:

after some internet research, decide to try:

sudo dd if=/dev/sdc of=/media/temp/oldHD conv=noerror,sync bs=32M

dd gets stuck on byte 2583691264:



laptop:~$ sudo dd if=/dev/sdc of=/media/temp/oldHD conv=noerror,sync bs=32M
dd: reading `/dev/sdc': Input/output error
76+1 records in
77+0 records out
2583691264 bytes (2.6 GB) copied, 152.213 s, 17.0 MB/s
dd: reading `/dev/sdc': Input/output error
76+1 records in
77+0 records out
2583691264 bytes (2.6 GB) copied, 152.544 s, 16.9 MB/s
dd: reading `/dev/sdc': Input/output error
76+1 records in
77+0 records out
2583691264 bytes (2.6 GB) copied, 152.696 s, 16.9 MB/s
dd: reading `/dev/sdc': Input/output error
76+1 records in
77+0 records out


20 minutes later, stuck in the same byte


2583691264 bytes (2.6 GB) copied, 1117.79 s, 2.3 MB/s
76+1 records in
77+0 records out


the resulting image has not grown a byte.


Have I misplaced the 'conv' dd options?

some ideas?


thanks!

[The Cog]

I have heard of this, but not needed to use it. There is a package gddrescue in the Ubuntu repositories. It may be worth a shot.
http://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html

[vilman]

Cool! this one at least does not gets stuck. I'll go deep into that, and post some update.