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- From: bharris@hfglobe.intel.com (Bennie Harris)
- Newsgroups: comp.os.os2.misc
- Subject: Re: formatting a 3.5" HD diskette to 720K: broken?
- Message-ID: <BxoBnH.Bs4@hfglobe.intel.com>
- Date: 13 Nov 92 21:28:28 GMT
- Article-I.D.: hfglobe.BxoBnH.Bs4
- References: <BxIxvE.MEI@ccu.umanitoba.ca> <473@bertha.HyperDesk.com> <1992Nov12.130901.5850@balr.com> <9539@blue.cis.pitt.edu.UUCP>
- Organization: Intel Corporation
- Lines: 47
-
- djbpitt+@pitt.edu (David J Birnbaum) writes:
-
-
- >I thought I'd never want to format a 720K 3.5" diskette again, but I'm
- >trying to use diskcopy to back up some software distributed in that
- >format. OS/2 refuses to comply. I'm using a HD diskette that OS/2 was
- >happy to format at 1.44K. I wiped that formatting clean with a bulk
- >eraser before trying to reformat at lower density. The results:
-
- >1) If I click on the drive icon, select format, and set the density to
- >720K, the first 50% goes smoothly. The drive then begins to chug. After
- >several seconds, the bar grudging slips a little beyond 50%. The drive
- >then chugs forever, making no progress, until I abort.
-
- >2) If I use an OS/2 window and type 'format a: /n:9' (following
- >instructions), the first 50% goes smoothly, then the chugging starts,
- >then we creep up to 56%, and there we chug until I abort.
-
- >3) If I use a DOS window and the appropriate parameters, the formatting
- >reaches 100% and then apports with a "DMA across 64K" error message.
- >Selecting 'retry' doesn't help. The disk is unreadable when I abort the
- >format.
-
- >4) If I use a DOS window and run fdformat version 1.8 with the /f:720
- >option (normal 720K format, with no funny stuff), I get the same error
- >message as in #3. Using the /A (BIOS) option doesn't help.
-
- >All of the above are reproducible and were tried with multiple diskettes
- >(which, as I mentioned, were easily formatted to 14.4K).
-
- >Anyone know what gives?
-
- >Thanks,
-
- >David
- >--
- >Professor David J. Birnbaum djbpitt+@pitt.edu [Internet]
- >The Royal York Apartments, #802 djbpitt@pittvms [Bitnet]
- >3955 Bigelow Boulevard voice: 1-412-687-4653
- >Pittsburgh, PA 15123 USA fax: 1-412-624-9714
-
- Try using a DD (720k) diskette and see it it format OK. I
- have seen problems with trying to format HD diskettes to
- a lower density with DOS. (before I installed OS/2). My
- disks formatted OK when I used the correct density.
-
- -- Bennie Harris
-