Re: [tlug] Mac OS X: bad super block has become Unsupported sector size (0)

[Jean-Christian Imbeault <jc.imbeault@example.com>]

Oh no, this isn't lookin too good for me.

I'm hopin that all I've done is trash the FAT or somesuch and that I
can still recover the data?

Unfortunate I can't make an image as the disk is 1TB and I don't have
anything that could accept an image that size (not that I even know
how to make an image).

Can anyone recommend a file recovery tool or some way of getting files
of he drive? Or has beefs really gone and erased everything?

Jc

On Saturday, May 21, 2011, Simon Cozens <simon@example.com> wrote:
> On 21/05/2011 11:22, Jean-Christian Imbeault wrote:
>> First I tried to fsck the HDD and it complained about a bad
>> superblock. It tried to use alternate superblocks but couldn't find
>> any suitable ones. I manually forced it to use the first alternat
>> using fsck -b 32 but it still complained, same for trying to use the
>> last one.
>
> Oh dear. OS X's fsck is not particularly filesystem-aware. It is what linux
> would call fsck.ufs - i.e. it assumes that everything checks is a UFS
> filesystem. Since you're later trying to mount it as MSDOS, I suspect this
> will have trashed your data.
>
>> I then did a newfs on the HDD thinking this would regenerate the
>> superblocks.
>
> If the fsck didn't trash your data, the newfs most certainly will have done.
>
>> macmini:~ jci$ sudo /sbin/mount_msdos /dev/disk1s1 /Volumes/ELEMENTS/
>> mount_msdos: Unsupported sector size (0)
>
> It's not MSDOS any more. Who knows what it is.
>
>> I'd be happy at this point if I could just mount the drive so I can
>> move my files off it to a new HDD.
>
> It's probable that there aren't any files left to move. Sorry. :(
>
> My advice would be: get it into a Linux box. Image the filesystem *now* before
> doing anything else with it. Try fsck.vfat and hope for the best, although
> probably the FATs have already gone. :(
>
>
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