Newsgroups: comp.os.os2.misc
Path: utzoo!utgpu!news-server.csri.toronto.edu!torsqnt!tmsoft!mshiels
From: mshiels@tmsoft (Michael A. Shiels)
Subject: Re: making an os/2 5.25" install disk from a 3.5" disk
Message-ID: <m4g7t.wgj@tmsoft>
Organization: MaS Network Software and Consulting
References: <457.2844fde8@mbcl.rutgers.edu>
Date: Sat, 1 Jun 1991 13:21:02 GMT

I just did this for OS/2 2.0 release 2 disks which we could only get in 3 1/2"
format and we all have 5 1/4" drives.  Copying the data is no problem.  Most
of the time they leave enough space free in the 3 1/2" disk to fit onto a 5 1/4".
The tricky part of record the contents of the real 5 1/4" boot block (512 bytes)
and then writing the 3 1/2" boot block over it and patching the first portion
of it to be the same.  If you know the format of boot blocks you should have
no problem.  DEBUG can be used to read/write the sector but we used our own