Data recovery and disk repair questions and discussions related to old-fashioned SATA, SAS, SCSI, IDE, MFM hard drives - any type of storage device that has moving parts
May 5th, 2009, 5:18
Hi!
I've been trying to heal a Seagate SCSI disk (ST3146807LC) using MHDD, and the fact is that I get 99% of the blocks marked with an "x" (UNC). If usually I get one <10ms block each line, and the rest in the line are <3ms blocks... this time I get all "x" blocks in a line, and every few lines, a <10ms block :S. Oh, and just when I start the scanning, I get a whole green line (<150ms blocks).
Imaging the disk would take like a few years, since in 24h's time any imaging tool I used could only copy ~150 MB, and it's a 146 GB drive. But taking a look to those 150MB, there's still data in them, although there are thousands of bad sectors flagged as "5E" or whatever...
So, what can I do with this hard disk? any suggestion? I think I might open it and check for head crash or a huge scratch :S...
P.S.: Although I choose the "remap" option, MHDD doesn't seem to remap any block (no blue blocks, just "x") :S, why's that?
P.S.2: I get the "CATASTROPHIC ERROR, disk full [...]" whenever I scan about four million sectors, either I scan from LBA 0 or not. Is that because of my RAM capacity?
May 5th, 2009, 7:36
No it's only because the drive has more serious problems....
May 5th, 2009, 7:46
Could you do something with it? Because PC3k is not helping me... I think it has a very big physical problem u_u maybe a headswap could help... but, unfortunately, I think the problem's gonna be in the platters.
May 5th, 2009, 8:37
You mean PC3K SCSI ? The first step should be proper diagnose. I think there could be a 15-20% of probability of damaged PCB but the fact it IDs properly and you can run MHDD on it makes me think about other problem like SA/firmware (can you check translator BTW ?). THEN you can check the heads.
What is the defect history of the drive - I mean : when and how the failure came out ? suddenly ? increasing errors then complete failure ? working OK then after turning off and on the system the drive failed ?
May 5th, 2009, 8:55
From SCSI Cheetah the most common problem its the LBA 0 Problem, when u send the CDB Commands wich answer´s did u get?
Regards
May 5th, 2009, 12:50
Seems not LBA0 as he can use MHDD on it.
May 5th, 2009, 16:20
That's what I said. Now only the right tools are needed... or (as always) send to a pro...
May 6th, 2009, 4:44
Everything seems to be OK. There's some data I've been able to recover, but there are lots of bad sectors, that's all...
May 6th, 2009, 4:51
If got all relevant data reformat the drive after an ERASE with MDD and see what happens (maybe it's only ECC...) : rescan it. IF fixed, live with it. If problem comes out again, head(s) or media are degrading.
May 6th, 2009, 14:19
I sure hope MHDD doesn't report a UNC error for any reason other than the drive itself reporting a UNC error.
Also MHDD has the option to load SCSI drivers.
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