How to recover an integer ext3 partition from a disk with a damaged partition table ?

[Andrea Mastellone]

Hi,

I have a broken solid state disk, in facts badblocks has found about a 
hundred of damaged blocks. The most shortcoming is that I have lost the 
partition table too, and I suspect that some bad blocks are in relation 
with the partition table data since testdisk can not write the recovered 
partition table to the disk. Now, I need to rescue a 10 GB ext3 
partition (that is the last one on device).

So, I would like to use dd (or dd_rescue) to physically transfer the 
partition in a file on an ext3 USB disk, and then mount the file as an 
ext3 partition (like an iso file by means of loopback device, is it 
possible ? how ?).

Since I am poor experienced with the CHS and LBA notations, someone can 
me confirm this: testdisk signals that the partition begins at 6403, 1 
,1 and ends at 7798, 254, 63 in CHS notation. Since the disk has 255 
heads and 63 sectors, the corrispective LBA addresses would be 102864258 
and 125290810, isn't it ?

And, what of these data can I pass to dd (or dd_rescue) in order to 
transfer the partition ?

Or can you suggest a better way to rescue the partition ?

Thanks in advance,

Andrea