Newsgroups: comp.sys.amiga.misc
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!caen!news.cs.indiana.edu!att!cbnewsj!vrr
From: vrr@cbnewsj.att.com (veenu.r.rashid)
Subject: Re: HELP!  Trouble with hard drive
Organization: AT&T Bell Laboratories
Distribution: na
Date: Mon, 15 Apr 91 18:06:47 GMT
Message-ID: <1991Apr15.180647.2264@cbnewsj.att.com>
Keywords: hard drive, checksum error
References: <1991Apr15.015043.8672@cbnewsj.att.com>
Lines: 52

In article <1991Apr15.015043.8672@cbnewsj.att.com> vrr@cbnewsj.att.com (veenu.r.rashid) writes:
>
>My A3000 guru'd while trying to save an ILBM file with XLispStat
>running in the background.  The drive which it was saving to now
>reports a "Volume Misc has a checksum error on disk block 87611"
>which comes up when trying to access the partition either while
>reading or deleting the offending file.  It also comes up when
>accessing the drive on boot up.  What can I do??
>
>I tried HDToolBox and checked for Errors on Disk.  There are none
>reported.  I do not want to reformat the drive since I am out of
>floppy disks to store the data on (besides the partition is 50 meg).
>Help!!  There are several very important files on the partition. 
>How can I fix the problem?  Disksalv does not seem likely.  I also
>thought about using a disk utility such as NewZap or DiskZap.  These
>do not seem compatible with a hard drive.  NewZap references only by
>file and DiskZap seems to have no way to reference disk blocks by
>decimal number.  Besides, I couldn't figure out what to do with the
>file when I get it on NewZap.
>
>Does someone have any suggestions, or could you direct me to any
>utilities which may be able to repair files or blocks with
>damaged checksums and validate the partition?  Also, Filemaster
>will not write to the disk.  Anything I do comes up with
>"Volume Misc not validated".  Is there anything I can do?
>
>Please reply email ASAP since I have to get this partition working
>by tomorrow.
>
>Thanks very much,
>Veenu
>
>

Thanks for all the replies.  Most suggested that I buy QuarterBack Tools.
I tried a PD utility called FixDisk which would not work with my hard
disk partitions.  Finally I just copied the important files and formatted
the partition.  I got one good suggestion that I find the hash table for
the file and zero it or something.  I am fairly useless at navigating
my way around the AmigaDOS file system.  However, if I could get to the
offending block I could just as well fix the checksum using DiskZap.
Unfortunately, DiskZap did not really know what to do with a hard drive.

I would like to find a way to disconnect a file from a directory if this
ever happens again - maybe a manual way to 'delete' the file and validate
the partition.  Any ideas ?

Anyway, post followups to comp.sys.amiga.misc and do not send me mail!

Thanks very much,
Veenu