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From: brian@prism.UUCP
Newsgroups: comp.sys.ibm.pc
Subject: Re: Updating DOS on a harddisk
Message-ID: <206900087@prism>
Date: Mon, 9-Nov-87 09:18:00 EST
Article-I.D.: prism.206900087
Posted: Mon Nov  9 09:18:00 1987
Date-Received: Wed, 11-Nov-87 06:03:32 EST
References: <3418@ece-csc.UUCP>
Lines: 24
Nf-ID: #R:ece-csc.UUCP:-341800:prism:206900087:000:944
Nf-From: prism.UUCP!brian    Nov  9 09:18:00 1987


If you are going from dos 2.x to 3.x, you have to:

1) back up your entire hard disk
2) reformat your hard disk using dos 3.x (boot from the floppies)
3) put all your files back on. 

DOS 3.x uses 16bit fat entries, whereas dos 2.x uses 12 bits. That's why
dos 3.x couldn't recognize the space left on the disk when you put it on --
it was attempting to deal with 12bit fat's.  To recover your disk right now,
you must boot dos 2.x in the floppy drive, sys drive c: with 2.x, put command
.com back on, and start from there again.

----
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