Re: help how to recover from a filesystem reformatted

From: Gerard Henry (ghenry@cmi.univ-mrs.fr)
Date: Tue Mar 09 2004 - 05:03:33 EST


this is a summary, no simple solution for me
David Foster pointed that "sounds the job for a data restoration company, like ontrack", and quite very expensive.
sun hotline says the same thing.

On Thu, Mar 04, 2004 at 12:37:52PM +0100, Gerard Henry wrote:
> hello,
> i did a very bad thing, instead of upgrading a blade station, i did an install, so i lost files on a particular partition.
> But, perhaps, i can recover some files, because the partition /dev/dsk/c0t0d0s3 was only reformatted, but not modified since the last reboot
> if i do:
> od -c /dev/dsk/c0t0d0s3 |more
> i can see contents of ascii files. Anybody knows if i can do something else to recover postscript files?
> Someone tells me about a solution, with magic numbers, perhaps, i can use
> rebecca-root% newfs -N /dev/rdsk/c0t0d0s3
> /dev/rdsk/c0t0d0s3: 33704496 sectors in 33437 cylinders of 16 tracks, 63 sectors
> 16457.3MB in 380 cyl groups (88 c/g, 43.31MB/g, 5504 i/g)
> super-block backups (for fsck -F ufs -o b=#) at:
> 32, 88800, 177568, 266336, 355104, 443872, 532640, 621408, 710176, 798944,
> Initializing cylinder groups:
> .......
> super-block backups for last 10 cylinder groups at:
> 32820640, 32909408, 32998176, 33086944, 33175712, 33264480, 33353248,
> 33442016, 33530784, 33619552,
>
> high magic with fsck to recover old filesystem? it is possible?
>
> Thanks, i'll resume
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