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Identifying files corrupted by bad sectors?
I recently moved my OS installation from a Seagate Barracuda IV 80GB drive to a 120Gb Barracuda 7200.7 drive. This was because the old drive had developed bad sectors and had been in constant use for three years. Neither Ghost v5.1d nor Drive Image 2002 would image the old disk, both aborting when encountering bad sectors. Ghost aborted with an "internal consistency error" even though the "ignore bad sector" option was turned on. In the end, I used dd_rescue on a Knoppix box to image the drive and am now using the cloned drive (typing this using it.) It would be very useful, however, to know which files have been damaged by the bad sectors on the original drive. Is there anything that will analyse the drive and tell me this, so I can restore them from tape? Thanks. -- (\__/) (='.'=) This is Bunny. Copy and paste bunny into your (")_(") signature to help him gain world domination. |
#2
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Identifying files corrupted by bad sectors?
Mike Tomlinson wrote
I recently moved my OS installation from a Seagate Barracuda IV 80GB drive to a 120Gb Barracuda 7200.7 drive. This was because the old drive had developed bad sectors and had been in constant use for three years. Neither Ghost v5.1d nor Drive Image 2002 would image the old disk, both aborting when encountering bad sectors. Ghost aborted with an "internal consistency error" even though the "ignore bad sector" option was turned on. In the end, I used dd_rescue on a Knoppix box to image the drive and am now using the cloned drive (typing this using it.) It would be very useful, however, to know which files have been damaged by the bad sectors on the original drive. Is there anything that will analyse the drive and tell me this, so I can restore them from tape? There are a few utes around that will report bad sectors by both the block number and the file. Unfortunately I cant remember which ones do that. You should be able to do a binary compare using a knoppix CD and the ones affected by the bads should show up that way. |
#3
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Identifying files corrupted by bad sectors?
Rod Speed wrote:
Mike Tomlinson wrote I recently moved my OS installation from a Seagate Barracuda IV 80GB drive to a 120Gb Barracuda 7200.7 drive. This was because the old drive had developed bad sectors and had been in constant use for three years. Neither Ghost v5.1d nor Drive Image 2002 would image the old disk, both aborting when encountering bad sectors. Ghost aborted with an "internal consistency error" even though the "ignore bad sector" option was turned on. In the end, I used dd_rescue on a Knoppix box to image the drive and am now using the cloned drive (typing this using it.) It would be very useful, however, to know which files have been damaged by the bad sectors on the original drive. Is there anything that will analyse the drive and tell me this, so I can restore them from tape? There are a few utes around that will report bad sectors by both the block number and the file. Unfortunately I cant remember which ones do that. Doesnt the Seagate diagnostic report the file affected ? Unfortunately I cant try that because I dont have a hard drive with bads. One approach would be to try the bad scanners on the Ultimate Boot CD. You should be able to do a binary compare using a knoppix CD and the ones affected by the bads should show up that way. |
#4
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Identifying files corrupted by bad sectors?
Rod Speed wrote:
Rod Speed wrote: Mike Tomlinson wrote I recently moved my OS installation from a Seagate Barracuda IV 80GB drive to a 120Gb Barracuda 7200.7 drive. This was because the old drive had developed bad sectors and had been in constant use for three years. Neither Ghost v5.1d nor Drive Image 2002 would image the old disk, both aborting when encountering bad sectors. Ghost aborted with an "internal consistency error" even though the "ignore bad sector" option was turned on. In the end, I used dd_rescue on a Knoppix box to image the drive and am now using the cloned drive (typing this using it.) Doesnt the dd_rescue log file list the ones its had a problem with ? It would be very useful, however, to know which files have been damaged by the bad sectors on the original drive. Is there anything that will analyse the drive and tell me this, so I can restore them from tape? There are a few utes around that will report bad sectors by both the block number and the file. Unfortunately I cant remember which ones do that. Doesnt the Seagate diagnostic report the file affected ? Unfortunately I cant try that because I dont have a hard drive with bads. One approach would be to try the bad scanners on the Ultimate Boot CD. You should be able to do a binary compare using a knoppix CD and the ones affected by the bads should show up that way. |
#5
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Identifying files corrupted by bad sectors?
In article , Rod Speed
writes Doesnt the dd_rescue log file list the ones its had a problem with ? Only by sector number, not by filename, but thanks for the thought. I'll have a go with your other suggestions. I took two copies of the original disk, so can have a play with the second copy. |
#6
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Identifying files corrupted by bad sectors?
Previously Mike Tomlinson wrote:
I recently moved my OS installation from a Seagate Barracuda IV 80GB drive to a 120Gb Barracuda 7200.7 drive. This was because the old drive had developed bad sectors and had been in constant use for three years. Neither Ghost v5.1d nor Drive Image 2002 would image the old disk, both aborting when encountering bad sectors. Ghost aborted with an "internal consistency error" even though the "ignore bad sector" option was turned on. In the end, I used dd_rescue on a Knoppix box to image the drive and am now using the cloned drive (typing this using it.) It would be very useful, however, to know which files have been damaged by the bad sectors on the original drive. Is there anything that will analyse the drive and tell me this, so I can restore them from tape? Since you are already using Linux (I assume), this is simple: Do a backup with tar to nowhe tar cf - /dev/null whatever is to backup It will run into a read error on each file with a defect and report that. I am not sure whether you need to fix each hit and then re-run or whether tar will continue and report all errors that way. Another option should be a recursive wc or md5sum: find /cdrom -type f -exec md5sum \{\} \; /dev/null Arno |
#7
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Identifying files corrupted by bad sectors?
Previously Mike Tomlinson wrote:
In article , Rod Speed writes Doesnt the dd_rescue log file list the ones its had a problem with ? Only by sector number, not by filename, but thanks for the thought. I'll have a go with your other suggestions. I took two copies of the original disk, so can have a play with the second copy. You cannoty find the defects on the copy, only on the original... Arno |
#8
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Identifying files corrupted by bad sectors?
"Mike Tomlinson" wrote in message
I recently moved my OS installation from a Seagate Barracuda IV 80GB drive to a 120Gb Barracuda 7200.7 drive. This was because the old drive had developed bad sectors and had been in constant use for three years. Neither Ghost v5.1d nor Drive Image 2002 would image the old disk, both aborting when encountering bad sectors. Ghost aborted with an "internal consistency error" even though the "ignore bad sector" option was turned on. In the end, I used dd_rescue on a Knoppix box to image the drive and am now using the cloned drive (typing this using it.) It would be very useful, however, to know which files have been damaged by the bad sectors on the original drive. Is there anything that will analyse the drive and tell me this, so I can restore them from tape? So, what's wrong with using the OS native utilities specifically for that purpose? Thanks. |
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