Using a dd created partition?

compu73rg33k · 09-09-2006, 07:20 PM

I had a problem in the past with an old maxtor harddrive that was 200 GB that developed some bad sectors. I used the command "dd if=/dev/hdb3 of=/dev/hda1 bs=512 conv=noerror,sync" to copy the entire partition (160GB) to a new WDD 320 GB harddrive to a partition of 170GB. The WDD is hda1 and the old maxtor partition is on hdb3. I'm running slax and when I run dmesg | tail it says

Code:

SQUASHFS error: Can't find a SQUASHFS superblock on hda1
ResierFS: hda1: warning: sh-2021: resiserfs_fill_super: can not find reister fs on hda1
ResierFS: hda1: warning: sh-2021: resiserfs_fill_super: can not find reister fs on hda1
VFS: Can't find ext3 filesystem on dev hda1.
ResierFS: hda1: warning: sh-2021: resiserfs_fill_super: can not find reister fs on hda1

Isn't the filesystem supossed to copy as well?

haertig · 09-09-2006, 08:36 PM

Did the dd command complete without errors? dd can get hung up on disk errors, that "conv=noerror" parameter nonwithstanding.

If you're trying to copy a disk with bad spots, you may need ddrescue or ddrhelp and also fsck. See the following thread for more info http://www.linuxquestions.org/questi...d.php?t=431028

compu73rg33k · 09-09-2006, 08:48 PM

Ah well I recovered my data! The dd did complete but it did have some errors in the first minute about sectors, as expected. I ran reiserfsck --rebuild-sb /dev/hda1 and then --rebuild-tree /dev/hda1 and it mounted!