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

[Peter Brandt <me387511@example.com>]

Hello Jean-Christian

Jean-Christian Imbeault wrote:
> I'm hopin that all I've done is trash the FAT or somesuch and that I
> can still recover the data?

Chances are good that exactly this has happened. Unless you explicitly 
tell them, many programs creating filesystems will not wipe the entire disk.

A long time ago, I had to recover files from a FAT memory card (digital 
camera) which had lost its FAT structure. The tool I used was "PhotoRec" 
(http://www.cgsecurity.org/wiki/PhotoRec) which happily ignores any 
filesystem and searches for your data in the raw sectors of the disk.

If the disk itself happens to show occasional read errors (which is 
often the root cause for a corrupted file system structure), "ddrescue" 
(http://www.gnu.org/software/ddrescue/ddrescue.html) might help you. It 
has helped me before.

> 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).

At least for ddrescue you will need space somewhere equivalent to the 
size of the partition you want to recover.

I suggest getting another external disk for that purpose. Cheap 1TB USB 
drives should sell around 6000 to 7000 JPY these days.

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

Again, I do *not* believe that all your data is gone. Good luck!

Peter