Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!teknowledge-vaxc!jbrugge
From: jbrugge@teknowledge-vaxc.ARPA (John Brugge)
Newsgroups: comp.sys.mac
Subject: Re: SE/30s, Life, the Universe, and Everything
Message-ID: <27547@teknowledge-vaxc.ARPA>
Date: 8 May 89 15:02:36 GMT
References: <3090@tank.uchicago.edu> <13380@dartvax.Dartmouth.EDU>
Reply-To: jbrugge@teknowledge-vaxc.UUCP (John Brugge)
Distribution: na
Organization: Teknowledge, Inc., Palo Alto CA
Lines: 20

In article <13380@dartvax.Dartmouth.EDU> xerox@eleazar.dartmouth.edu (James Osborne) writes:
> What is the deal with this FDHD I have? I work in the computer store at
> the college, with consultants surrounding me, and it wasn't until I went to
> format a disk with my new SE/30 that I learned that you have to buy a different
> kind of diskette to use the 1.4 meg option.  Am I right here?  I can not 
> format a double sided disk as 1.4M? This is the first the store has heard
> of it since we don't even carry HD 3.5 disks.  Ugh!

The only thing that tells the FDHD that the disk is a HD disk is a
square hole on the top left side, opposite the read/write hole.
A fellow at ComputerWare said that you can buy a punch for ~$7-$8
to make your DSDD disks look like the HD ones (but, of course, he
didn't *advocate* this, or sell the punch).  He didn't know of any
other difference in the disks.

Making your DSDD disks into HD disks is probably about as risky
as formatting SSDD disks as DSDD -- they work most of the time,
but you can't go crying to Sony when you lose your data.

John