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- From: tope@enea.se (Tommy Petersson)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: HD floppy on A3000 problems
- Message-ID: <1993Jan22.173616.22087@enea.se>
- Date: 22 Jan 93 17:36:16 GMT
- References: <llucp7INNre@news.bbn.com>
- Organization: Enea Data AB
- Lines: 50
- X-Newsreader: Tin 1.1 PL3
-
- leekil@bbn.com (Lee Kilpatrick) writes:
- : chsieh@Ingres.COM (Chemin Hsieh) writes:
- :
- :
- : >I recently bought a HD floppy for my A3000. After changing the jumper
- : >on the motherboard and the jumper on the drive itself to be df1, the
- : >machine boots fine and both drives are accessible (the HD floppy and
- : >the regular LD one that came with the 3000). They both read, write,
- : >and format DSDD floppies fine. Now for the problem. I had bought
- : >HD floppies some time ago anticipating this purchase, and had formatted
- : >them with the LD drive. The new HD drive cannot read these disks,
- : >which is to be expected, as the drive detects the hole in the disk
- : >and expects high density, so it spins at half speed. But when I try
- : >to reformat such a disk, it either complains about bad sectors and
- : >aborts the format, or finishes (after stuttering on some tracks) but
- : >the disk is only 880K! What's up? I read in this group that you just
- : >format a disk and voila! It's 1.76M. Is this true (and therefore,
- : >I have a bad drive)? Or do I need to do something funky with a
- : >mountlist entry? Or does formatting an HD disk with an LD drive screw
- : >up the disk such that it can't be reformatted with an HD drive?
- :
- :
- : I have seen similar problems trying to format a disk on an IBM that
- : has been previously formatted on another machine, like an Amiga. This
- : was ot specifically a DD->HD change, but maybe a DD->DD change. I
- : thought it was just an IBM problerm, but maybe it is a common disk
- : drive anomaly. It doesn't seem like it should happen, at any rate.
- : When I did the same thing you were trying to do, going from DD->HD
- : with my floptical drive, it worked fine. My suggestion would be to
- : "blank" out the disks by rubbing a magnet around on the outside of the
- : case and then trying to format them. I suppose this is okay to do,
- : anyone know anything to the contrary?
- :
- :
- : Lee
-
- If you know someone with an PClone or a Mac with HD drives, try to
- format the disk on one of those machines.
-
- If I don't recall things wrong, it was (is) a bug in AmigaDOS.
- Changing between DD and HD diskettes screws things up, not just for
- formatting. I beleive the SetPatch that comes with WB2.1 corrects
- this. These statements are, however, nothing more than (educated?)
- guesses. I have a very fuzzy memory of it all. I run WB3.0 and have
- no problems with my HD drive.
-
- --
- =============================================================================
- Tommy Petersson tope@enea.se Enea Data AB, Sweden
- =============================================================================
-