Recovering data from duff CDROM ?
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From: Mike Jones on 2 Nov 2009 10:20 Responding to Bit Twister: > On Mon, 02 Nov 2009 11:08:10 GMT, Mike Jones wrote: >> >> >> I burned a CDROM a short while back, and now can't get the damn thing >> to mount (even though it would have been checked as OK prior to >> storage). As its got data on it that is no longer available from >> source, I'm wondering if anybody has any favorite tricks they've used >> to force a mount. > > Just for fun, try > mount -t auto /dev/xxxx /some_mount_point_here Done that already, and 'mount -s -t auto /dev/xxxx /some_mount_point' -- *===( http://www.400monkeys.com/God/ *===( http://principiadiscordia.com/ *===( http://www.slackware.com/
From: Pascal Hambourg on 2 Nov 2009 11:05 Hello, bb a �crit : > > There is a tool named ddrescue that can continue to read even if you get > block errors, and if you save it to a file, and once you have the file, > try to play it with mplayer to see if there is any hope at all to get the > mp3 files back. Will mplayer be happy to be fed with a filesystem image ? If not, you can try to recover files from the filesystem image with photorec, which is part of the testdisk package.
From: Mike Jones on 2 Nov 2009 13:08 Responding to Pascal Hambourg: > Hello, > > bb a écrit : >> >> There is a tool named ddrescue that can continue to read even if you >> get block errors, and if you save it to a file, and once you have the >> file, try to play it with mplayer to see if there is any hope at all to >> get the mp3 files back. > > Will mplayer be happy to be fed with a filesystem image ? If not, you > can try to recover files from the filesystem image with photorec, which > is part of the testdisk package. These look useful, but first I need to get the dvd drive to physically read something. ATM its just spins a while, then bombs out with a "No such file or directory" error. I'll play around with ddrescue, but I don't thing it'll do much until I can figure out how to read /something/ on the duff disk. Cheers. -- *===( http://www.400monkeys.com/God/ *===( http://principiadiscordia.com/ *===( http://www.slackware.com/
From: Mike Jones on 2 Nov 2009 13:21 Responding to Mike Jones: > Responding to Pascal Hambourg: > >> Hello, >> >> bb a écrit : >>> >>> There is a tool named ddrescue that can continue to read even if you >>> get block errors, and if you save it to a file, and once you have the >>> file, try to play it with mplayer to see if there is any hope at all >>> to get the mp3 files back. >> >> Will mplayer be happy to be fed with a filesystem image ? If not, you >> can try to recover files from the filesystem image with photorec, which >> is part of the testdisk package. > > > These look useful, but first I need to get the dvd drive to physically > read something. ATM its just spins a while, then bombs out with a "No > such file or directory" error. > > I'll play around with ddrescue, but I don't thing it'll do much until I > can figure out how to read /something/ on the duff disk. > > Cheers. Update: Just tried mount -t iso9660 /dev/sr0 /home/user/temp and got 'mount: /dev/sr0: can't read superblock' as the error. This is a different error to the others, so maybe the superblock is barfed on the cdrom disk? If so, maybe its beyond recovery? Its a read:write disk, so there may be a trick yet? -- *===( http://www.400monkeys.com/God/ *===( http://principiadiscordia.com/ *===( http://www.slackware.com/
From: Vahis on 2 Nov 2009 13:21
On 2009-11-02, Mike Jones <Not(a)Arizona.Bay> wrote: > Responding to Pascal Hambourg: > >> Hello, >> >> bb a écrit : >>> >>> There is a tool named ddrescue that can continue to read even if you >>> get block errors, and if you save it to a file, and once you have the >>> file, try to play it with mplayer to see if there is any hope at all to >>> get the mp3 files back. >> >> Will mplayer be happy to be fed with a filesystem image ? If not, you >> can try to recover files from the filesystem image with photorec, which >> is part of the testdisk package. > > > These look useful, but first I need to get the dvd drive to physically > read something. ATM its just spins a while, then bombs out with a "No > such file or directory" error. This is attempt to read a filesystem. Now, ddrescue is different (as is dd) It doesn't care about file systems, it reads the device. I have rescued some really badly broken ones with ddrescue. This takes time (hours or days) to accomplish but something will be rescued, that's for sure. You may be better off with creating a raw device and try to read from that, it's worked here. Here's one set of instructions: http://ask.metafilter.com/68265/But-its-just-a-little-scratch > > I'll play around with ddrescue, but I don't thing it'll do much until I > can figure out how to read /something/ on the duff disk. Your "no such file" is telling me that you haven't tried on device level. Try ddrescue, it's worth it. Vahis -- "Sunrise 7:48am (EET), sunset 4:18pm (EET) at Espoo, Finland (8:30 hours daylight)" http://waxborg.servepics.com Linux 2.6.25.20-0.5-default #1 SMP 2009-08-14 01:48:11 +0200 x86_64 8:10pm up 3 days 1:11, 11 users, load average: 0.20, 0.17, 0.18 |