I make a DD image to restore, but I can't mount the disk

[jsk]

I have the same problem with my Ubuntu 10.10 server. i've tried reading the file using knoppix (v3 & v6) and cygwin. I get the exact same errors that you did. If anyone else knows how to solve this, please let me know. I'm thinking we both used the dd command incorrectly. I did it the same way as you except for my destination file name of course.

[Forester]

I have the same problem with my Ubuntu 10.10 server. i've tried reading the file using knoppix (v3 & v6) and cygwin. I get the exact same errors that you did. If anyone else knows how to solve this, please let me know. I'm thinking we both used the dd command incorrectly. I did it the same way as you except for my destination file name of course.

Hi jsk and welcome to the Knoppix forums,

What Jeroen did (and so I guess you did too) was to back up a partition (file system and all). What I think Jeroen needed to do was restore the partition (file system and all).

For that, not only do you not need to mount the partitions first, you definitely don't want to. If the partition won't mount, then it doesn't have a file system on it. I haven't had the pleasure of playing with a NAS so I don't know what this 'reset' does. It looks like it restored the partition table but not the file system. That does not seem too unreasonable to me.

If you backed up a partition with:

dd if=/dev/sdc1 of=myBackup.certainlyNotIso

then you'd restore it with:

dd of=/dev/sdc1 if=myBackup.certainlyNotIso

assuming the world hasn't turned in between.

It's a cat, so there are harder ways of killing it but try Occam's Razor first. If that doesn't work, report back and we'll scratch heads some more.