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- From: withrow@lims01.lerc.nasa.gov (Jim Withrow)
- Newsgroups: alt.msdos.programmer
- Subject: Re: NonDos
- Message-ID: <withrow.5.0@lims01.lerc.nasa.gov>
- Date: 21 Dec 92 20:01:08 GMT
- References: <18240@mindlink.bc.ca> <rol-211292131758@90.222.1.80>
- Sender: news@eagle.lerc.nasa.gov
- Organization: NASA Lewis Research Center, Power Systems Facility
- Lines: 44
- Nntp-Posting-Host: 139.88.33.2
-
- In article <rol-211292131758@90.222.1.80> rol@grasp1.univ-lyon1.fr (Paul Rolland) writes:
- >From: rol@grasp1.univ-lyon1.fr (Paul Rolland)
- >Subject: Re: NonDos
- >Date: 21 Dec 92 12:19:04 GMT
- >In article <18240@mindlink.bc.ca>, Robert_LaCasse@mindlink.bc.ca (Robert
- >LaCasse) wrote:
- >>
- >> I have discovered in my chkdsk/f.com a reply stating--PROBABLE NON DOS DISK--
- >> every time I on my Hard c: drive the boot sector seems to be working just
- >> fine in booting up but I think that my partition section must be snafued
- >> since the command- PROBABLE NON-DOS DISK- is always displayed on chkdsk/f.
- >> I realize that this is usally bad news, but nothing apparently seems to be
- >> wrong with the general operation of the unit. I tried to sys c: from a floppy
- >> but the boot is alright. It was suggested that I format, but who wants to do
- >> that? Are there any other metods of fixing this problem;
- >
- >Hello,
- >
- >If my memory is good (and i think it is), this message appears when chkdsk
- >doesn't find a DOS signature at the beginning of the FAT. In other words,
- >the
- >first byte of your FAT on the C: disk isnot 0xF8.
- >This is a bad news. It seems to prove that your FAT may be wrong...
- >
- >> incidentally I put my
- >> pkunzip files in the DOS directory for faster access, could that be the
- >> problem?
- >
- >No, i don't think pkunzip could cause such a problem, even if you are using
- >beta release. May be a virus... Why don't you run your favorite virus
- >checker?
- >
- >Paul Rolland
- >
- >A bug can be changed to a feature by documenting it. Developpers know !
-
- I have seen this problem a few times before. It usually showed up when the
- disks were larger than 32Mb and some other non dos method of
- partitioning and formatting were used.
-
- Try using norton utilities to repair it (Norton Disk Doctor) or you may be
- using an old version of dos which you may want to upgrade.
-
- Jim Withrow
-