[clue] Oops, I did it again...

[chris fedde]

I suspect that you  don't have any other backup of the sdb drive?
yeah. I've been there.  Sucks to be you right now. :-(

At this point the most important thing is to preserve the state of
what you have.  I hate to say it but you might want to dd what's left
of /dev/sdb to some static storage like a usb drive.
Step 2 is to try to fsck with some alternate superblock.  With luck
you'll get a file system back from that.  After that its pretty much
catch as catch can as to what will work.
If you know how much got over written you can write back that amount
from a newfs'd drive and retry the fsck.

On Mon, Jul 25, 2011 at 3:00 PM, David L. Willson <DLWillson at thegeek.nu> wrote:
> Damn it, dd! Stop doing what I say! Or at least warn me... Ugh...
>
> I ~meant~: $ dd if=/dev/sda of=/dev/sdc
> but I said: $ dd if=/dev/sda of=/dev/sdb
>
> /dev/sdb ~had~ important stuph on it.
>
> Now, it has an in-determinate amount of garbage copied verbatim from
> /dev/sda, as much as it could copy before I read what I'd written, shrieked,
> and filled the keyboard buffer with <CTRL>+c's followed by some important
> stuph I might never see again.
>
> Sigh...
>
> I think step 0 of my "get some back" plan is to zero out the bit of /dev/sdb
> that matches /dev/sda, in order to get rid of the bogus information at the
> beginning of the disk. Anyone have a script handy?
>
> Links for when I get to steps 1-99?
>
> David L. Willson
> Trainer, Engineer, Enthusiast
> RHCE MCT MCSE Network+ A+ Linux+ LPIC-1 NovellCLA UbuntuCP
> tel://720.333.LANS
> Freedom is better when you earn it. Learn Linux.
>
>
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