Re: [gentoo-user] Corrupt USB pen drive

[Tim Allingham <deserted@westnet.com.au>]

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On Thu, 2007-05-17 at 17:04 +0100, Mick wrote:
> On Thursday 17 May 2007 16:38, Mick wrote:
> > On Thursday 17 May 2007 15:45, Dan Farrell wrote:
> > > On Thu, 17 May 2007 12:36:25 +0100
> > >
> > > Mick <michaelkintzios@gmail.com> wrote:
> > > > I tried to dd the boot sector so that I can look at it on my hard
> > > > drive, but it cannot access /dev/sda.  Is there anything that I can
> > > > do with my Gentoo to recover the files on this USB?
> > >
> > > have you tried reading raw from the device like
> > >
> > > | dd if=/dev/sda of=sda.image
> > >
> > > ?  That might do the recovery.  How to get it out of the image is the
> > > same problem but once the backup succeeds you can plug it into a
> > > windows xp box and reformat, and you will probably end up with the same
> > > partition structure as originally.  Then you can try to read the right
> > > part of the image out of the image, once you get the numbers from fdisk
> > > on the newly formatted drive, and end up with an image of sda1.  From
> > > there you should be able to mount sda1 and read out the data, if it
> > > isn't corrupted.
> >
> > Thanks Dan, as I said above I tried to extract the MBR out of it by
> > running:
> >
> > dd if=/dev/sda of=/tmp/r1 bs=512
> >
> > But couldn't access it whatsoever.
> >
> 
> Oops! I could access it, but of course I had to try it as root!  Right, I've 
> got it on my hard drive now, but still cannot mount it:
> ==================================
> # mount -t vfat /dev/loop2 /tmp/r1
> mount: wrong fs type, bad option, bad superblock on /dev/loop2,
>        missing codepage or other error
>        In some cases useful info is found in syslog - try
>        dmesg | tail  or so
> ==================================

Have you tried mounting with just

mount -o loop /dev/loop2 /tmp/r1

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