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From: dale@wucs1.wustl.edu (Dale Frye)
Newsgroups: comp.sys.ibm.pc
Subject: Re: 1.44M vs 720K floppy compatibility
Message-ID: <1990May4.222315.13301@cec1.wustl.edu>
Date: 4 May 90 22:23:15 GMT
References: <582@lexicon.com>
Sender: news@cec2 (USENET News System)
Reply-To: dale@wucs1.wustl.edu (Dale Frye)
Organization: Washington University, St. Louis MO
Lines: 21

Original poster talked about formatting 720K disk in a 1.44M drive.
He was trying to use the /4 option.

The /4 option is for formatting 360K disks in a 1.2M drive ONLY!!!

You must have DOS 3.3 (or 3.2???) or DOS 4.0 to do what you want.

In DOS 3.3
                FORMAT B: /T:80 /N:9

In DOS 4.0
                FORMAT B: /F:720
            or use 3.3 method.

I am of course assuming that drive B: is the 1.44M drive.

Another related problem with adding 1.44M drives is that older 
machines do not support 1.44M in their BIOS. You must use
a driver (included with DOS 3.3 and 4.0).

Dale Frye