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- Path: sparky!uunet!cis.ohio-state.edu!pacific.mps.ohio-state.edu!ohstpy!miavx1!miavx2.ham.muohio.edu!tgkreimer
- Newsgroups: comp.sys.novell
- Subject: Mirror copies of FAT don't match on drive
- Message-ID: <1992Aug22.204830.1050@miavx2.ham.muohio.edu>
- From: tgkreimer@miavx2.ham.muohio.edu (Tom Kreimer)
- Date: 22 Aug 92 20:48:30 EDT
- Organization: Miami University, Hamilton campus
- Lines: 44
-
- We recently purchased a Maxtor XT-8760EH hard drive, simialr to the
- XT-8760E that has given us no trouble for almost two years. The new
- drive, however, works great until the second time we try to mount it.
- At this point, it tells us that "The mirror copies of the FAT don't
- match" and the drive does not mount.
-
- I don't know the structure of a Novell disk, but the drive is not mirrored,
- so I suppose it has two copies of the FAT like a DOS disk does.
-
- What makes it really wierd is that VREPAIR finds problems completely randomly.
- Even if I don't write the corrections to the disk, one time it will find 64
- errors, the next time 128, and the next will find no problems. (This happened
- once, the errors aren't always in "computer" increments.) Even an empty drive
- will find problems with free blocks not marked as bad or used and even the
- root directory itself. VREPAIR will find no problems and the drive will mount
- about 20-25% of the time.
-
- Background info:
- Netware 3.11 on a CompuAdd 325 (a 25Mhz 386)
- The XT-8760 is a ESDI drive of approx. 625 MB and is Novell certified
- CompuAdd HardCache ESDI controller with 4MB cache (has worked great with the
- previous XT-8760 drive)
- The new drive will contain one unsegmented volume
- The old drive continues to work fine
- The old drive came pre-formatted
-
- What we've tried:
- Low-level format with the HardCache controllers FMT program (tried this twice)
- Format and surface check with INSTALL (tried this twice)
- VREPAIR (tried this about 20 times)
- Called the vendor, Hard Drives International
- Though not unhelpful, they are a DOS shop and suggested we call
- Novell (er, our reseller). They will replace the drive if we
- want, though. (It took long enough to get in the first place.)
-
- Any pointers will be appreciated (Insight to the "mirror copies of the FAT
- don't match" message, problems with the new 8760EH drive as opposed to the
- 8760E drives, low-level format procedures)
-
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- Tom Kreimer - Miami University - Oxford, Ohio
- tgkreimer@miavx2.ham.muohio.edu
- miavx1.acs.muohio.edu
- miavx2.bitnet
-