Re: [gentoo-user] Trouble with backup harddisks

[tuxic@posteo.de]

On 05/01 03:59, tuxic@posteo.de wrote:
> On 04/30 08:32, antlists wrote:
> > On 30/04/2020 18:04, tuxic@posteo.de wrote:
> > > I copied the first 230GB of that disk to an empty partition of my new
> > > system and run "testdisk" on it....after the analysis it came back
> > > with "this partition cannot be recovered" but did not sau. whether the
> > > reason is a partition table, which is broken beyond repair, or simply
> > > due to the incomplete image file...
> > 
> > Just come up with another idea that will hopefully give us some clues...
> > 
> > https://raid.wiki.kernel.org/index.php/Asking_for_help#lsdrv
> > 
> > Ignore the fact that it's the raid wiki - this tool basically delves into
> > the drive and tries to find mbr, gpt, superblock, lvm and raid signatures,
> > everything ...
> > 
> > So run that and see what it tells us ...
> > 
> > Cheers,
> > Wol
> > 
> 
> Hi Wol,
> 
> thank you for the link! I have installed mdadm (its on portage) but I
> have not used it, since there is another soultion for this, which I
> tried first. 
> 
> Andrea posted this wonderful line:
> 
> mount -o ro,offset=512 /dev/sdb /mnt/xxx
> 
> which mounts the filesystem by skipping the partitiontable completly.
> 
> Currently I am rescueing the data. If all is safed, I will tru
> mdadm...
> 
> Thank you very much for your help!
> 
> As soon as there are more information, I will report back.
> Maybe this can also help others with similiar problems.
> 
> Cheers!
> Meino
> 
> 
> 

Hi Wol,

data copied ! :)

I did a 

    mdadm --examine /dev/sdb

on one of the damaged partitions and this was print
on the console

host:/root>mdadm --examine /dev/sdb
/dev/sdb:
   MBR Magic : aa55
Partition[0] :   1953458175 sectors at            1 (type ee)


Cheers!
Meino