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 Forum index » Advanced Topics » Additional Software (PETs, n' stuff) » Utilities
ddrescue
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aragon

Joined: 15 Oct 2007
Posts: 1698
Location: Germany

PostPosted: Tue 02 Nov 2010, 15:46    Post subject:  

please read 4 posts up...

aragon

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davids45


Joined: 26 Nov 2006
Posts: 653
Location: Chatswood, NSW

PostPosted: Tue 02 Nov 2010, 21:30    Post subject:  

G'day,

I've just lost a partition on my sda disk (sda7) which fails to boot (it has a number of Frugal Pups) or to mount from Pup on another partition.

I've got ddrescue to copy the faulty sda7 to another drive. It reports a 119kB error before starting to copy what it can from sda7.

On this copy, fsck reports a super-block error/corruption, as it does if I try directly accessing the original sda7 with fsck.

Is this the right way to use ddrescue (is there some other program to try to explore the rescued data or the original ext partition)?

And is a super-block error fixable? Or do I just wipe and reformat the partition with GParted and re-install the Frugals and their sfs files

Thanks for any advice,
David S.
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abushcrafter


Joined: 30 Oct 2009
Posts: 1447
Location: England

PostPosted: Wed 03 Nov 2010, 07:49    Post subject:  

aragon wrote:
please read 4 posts up...

aragon
Thanks.
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aragon

Joined: 15 Oct 2007
Posts: 1698
Location: Germany

PostPosted: Wed 03 Nov 2010, 14:49    Post subject:  

David,

I've googled a little about the superblock error and it seems to me, that it's fixable without dataloss.

I'll see if i could find a good advice about a stategy snd will report back.

Aragon

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aragon

Joined: 15 Oct 2007
Posts: 1698
Location: Germany

PostPosted: Wed 03 Nov 2010, 16:47    Post subject:  

some more infos i've found (and on disclaimer Wink )

disclaimer: use at your own risk...

from ddrescue online-manual
Quote:
If you are trying to rescue a whole partition, first repair the copy with e2fsck or some other tool appropiate for the type of partition you are trying to rescue, then mount the repaired copy somewhere and try to recover the files in it.

http://www.gnu.org/software/ddrescue/manual/ddrescue_manual.html

assuming that it's ext2/ext3:
http://www.cyberciti.biz/tips/surviving-a-linux-filesystem-failures.html

last but not least: good luck

aragon

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chrome307


Joined: 15 Jan 2009
Posts: 713

PostPosted: Fri 19 Nov 2010, 08:28    Post subject:  

Sorry posted in wrong thread Embarassed
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xyrion

Joined: 30 Nov 2010
Posts: 4

PostPosted: Sat 16 Jul 2011, 01:00    Post subject:  

Thank you, aragon!
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davids45


Joined: 26 Nov 2006
Posts: 653
Location: Chatswood, NSW

PostPosted: Sat 16 Jul 2011, 21:02    Post subject:  

G'day aragon,
A belated 'thank you' from me too, as I see I did not let you know your links advice solved my above posted problem with my sda7 frugals partition.
David S.
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