[parted-devel] Help: How to find lost partition

[Andrea]

Hi,

I've done a cockup!
Damaged the partition table!

The hard disk has 3 partitions.
The problem is that I don't know any more where the 3rd starts! So now the 2nd covers the disk till 
the end.

I can still mount the 2nd: it is an ext3 and it is 3.8GB according to df.
The 3rd is a FAT32.

Is there a way to find where the partition starts?
My best plan is to scan /dev/sdb till I find something like the beginning of a FAT32 partition.
I've got an other FAT32 and it contains the bytes "FAT32" somewhere at the beginning.

Any suggestions?