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- From: macman+@pitt.edu (Dennis H Lippert)
- Newsgroups: comp.sys.mac.hardware,comp.sys.mac.system,comp.sys.mac.misc
- Subject: Re: Problem: SE formats HD floppy as DD, but LC rejects it...why?
- Message-ID: <4947@blue.cis.pitt.edu.UUCP>
- Date: 19 Aug 92 17:29:20 GMT
- References: <1992Aug17.192242.26080@venice.sedd.trw.com> <1992Aug17.200351.2274@twisto.eng.hou.compaq.com> <p59mj6j.bskendig@netcom.com>
- Sender: news+@pitt.edu
- Followup-To: comp.sys.mac.hardware
- Organization: University of Pittsburgh
- Lines: 44
-
- In article <p59mj6j.bskendig@netcom.com> bskendig@netcom.com (Brian Kendig) writes:
- >In article <1992Aug17.200351.2274@twisto.eng.hou.compaq.com> darylb@sword.eng.hou.compaq.com (Daryl Biberdorf) writes:
- >>I know that the behavior described is indeed the way the Mac
- >>does things, but it seems kind of silly. DOS machines routinely
- >>"adapt" to the format of the floppy inserted into the drive,
- >>provided the drive is capable of writing the format the disk is
- >>using. My 1.4 MB drive has no problem at all recognizing and properly
- >>using 720K diskettes without being told which it is.
-
- A few comments on both of these cited articles...
-
- First, a DOS machine will "routinely adapt" to a *correctly formatted*
- disk... i.e. it knows 720k from 1.44m, but it does this "check" by
- way of the hole in the disk. A DOS machine will *not* routinely adapt
- to a 720k disk incorrectly formatted 1.4m, nor the opposite case.
-
- Second, some DOS machines are not quite as smart as they look...
- (possibly all, but I only have extensive knowledge of our (ugh!) Zeniths).
- What I mean is that the drive will "automatically" format 1.44m (unless
- you add the /n:9/t:80 parameters to the FORMAT). The machine will then
- cough up an error message when the 720k disk is "unformattable".
-
- >Huh? I use a PS/2 tower machine, and no matter what kind of disk I
- >put in the drive, when I enter the 'format' command, it _always_ tries
- >to format the disk as high density. Then I always have to go fishing
- >for the DOS manual so I can remember the command-line option to make
- >the machine format the disk at the correct density.
-
- This is a quirk of PS-2's. We have them in one lab here at Pitt (they're
- moving to *my* lab within a few weeks...) and they frankly don't give
- a damn how they format any disk. (720 as 1.44m & vice-versa). This
- causes all kinds of hell for us, we send users back to that lab to
- get it fixed (720 as 1.44 format most common.... if 1.44 as 720 format
- we can cover the hole w/tape and fix it ourselves.)
-
- I think IBM made a big boo-boo a few years back, they should fix it
- sometime!
- -Den
-
- --
- ===============================================================================
- Dennis Lippert - macman+@pitt.edu or macman@vm2.cis.pitt.edu
- The "Mac Maniac" operator at the Hillman Research Lab - Univ. of Pittsburgh
- "All comments are mine, you'd look like a fool if *you* used them"
-