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- Newsgroups: comp.sys.amiga.hardware
- Path: sparky!uunet!cs.utexas.edu!torn!blaze.trentu.ca!trentu.ca!nrichers
- From: nrichers@trentu.ca (NIKOLAJ RICHERS)
- Subject: Re: HD floppy on A3000 problems
- Message-ID: <22JAN199322184843@trentu.ca>
- News-Software: VAX/VMS VNEWS 1.41
- Keywords: HD floppy
- Sender: news@trentu.ca (USENET News System)
- Organization: Trent Computing and Telecommunications Department
- References: <1993Jan21.182156.24018@pony.Ingres.COM> <llucp7INNre@news.bbn.com>
- Date: Sat, 23 Jan 1993 03:18:00 GMT
- Lines: 49
-
- In article <llucp7INNre@news.bbn.com>, 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
-
- I haven't tried this on my A3000, which came with a HD floppy already,
- but I read on some other non-Usenet newsgroup that the signals passing
- from a DD floppy won't let a HD floppy drive work properly. The cure
- is to make your HD floppy DF0, and your DD flopyy DF1. According to the
- source this should solve your problems.
-
- You might want to try this...
-
- Nikolaj (1)
-
- __________
-
- (1) Nikolaj Peddie-Richers, Trent University, Canada, nrichers@trentu.ca
-