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From: robin@medstar.UUCP (Robin Cutshaw)
Newsgroups: net.unix-wizards,net.micro.pc
Subject: Xenix fdisk and boot1 patches
Message-ID: <172@medstar.UUCP>
Date: Thu, 30-May-85 16:24:13 EDT
Article-I.D.: medstar.172
Posted: Thu May 30 16:24:13 1985
Date-Received: Fri, 31-May-85 23:43:36 EDT
Distribution: net
Organization: Medical Systems Technology and Research, Inc., Atlanta, Ga.
Lines: 41
Xref: watmath net.unix-wizards:13363 net.micro.pc:4082


These patches pertain to IBM XENIX (286 3.0)...


Here is the patch to /etc/fdisk to be able to use hard disks of type 4-8
under Xenix.  Previous patches have be posted for /etc/badtrack, /boot,
/xenix, and /xenix.fd.  All of these patches must be used together.

With each of the patches here and previously posted, one can install any type
of hard disk under Xenix hat will use the standard controller interface.
Changes to cylinder numbers different than those in the ROM BIOS may result
in the disk being unusable under both dos and Xenix unless you are supplied
with a device driver for dos.

cd /etc
cp fdisk fdisk-
adb -w fdisk -
71:12948/w 940		/* 915 = 940 */
71:12954/w 940		/* 410 = 940 */
71:12960/w 615		/* 462 = 615 */
71:12962/w 4		/* 8 = 4 */
71:12966/w 462		/* 492 = 462 */
71:12968/w 8		/* 5 = 8 */
71:12972/w 733		/* 900 = 733 */
71:12974/w 5		/* 7 = 5 */
$q


This is the patch to /etc/boot1 for more heads than 4 :

cd /etc
cp boot1 boot1-
adb -w boot1 -
$x
3f:151b?w 75xx		/* where xx is the number of heads */
$q

-- 
----
Robin Cutshaw
uucp:   ...!{akgua,gatech}!medstar!robin