On Tuesday, April 23, 1996, Darrell Tschakert wrote...
> >I'm trying to configure a computer to triple boot between Windows 95,
> >SCO UNIX (3.2v4.2 or ODT 2.0) , and DOS 6.22/Windows 3.11.
> <SNIP TO THE END>
> I use a program named lilo which comes with linux. I do not know
> for certain it it will handle more than two OS's but I don't see
> why it would not. I use it to switch between linux and DOS/Windows.
> It replaces the Master Boot Record. I think that it just causes the
> system to jump to the boot record or the OS that you select.
> I would not venture to guess how you would go about using it
> for your particular application, however, if you put up a message
> on one of the linux newsgroups, I am sure that you would be
> helped. You would at least be told whether or not it works.
> Darrell Tschakert
> (202) 663-4436
Set SCO as the active partition, but set /etc/default/boot to whatever OS
(either Unix or DOS) you wish to start by default.
Set Win95 to give you the menu option at startup (usually F8, but get
Powertoys from Microsoft's development team, and use "TweakUI" to turn on
this option all the time), or use "multi-config" in config.sys to either
select DOS or Windows.
When loading _upgrading_ to Win95, you may choose to either overwrite DOS
and Win3.1x or install to a different directory (like c:\win95), and use
the "boot previous version of DOS" from the startup menu mentioned above.
TweakUI, BTW, will allow you to set a timeout on the menu, so it will
start Win95 automatically after n_time has passed.
BACKUP, BACKUP, BACKUP. There are stories about Win95 wiping SCO
partitions (MS' way of saying "why anyone else?"). I think, if you are
just upgrading an existing partition, you may not run into this problem.
It will, however, make the DOS/Win partition active, so you'll need to run
fdisk from the DOS command line and set the SCO partition to active
Search the MS Knowledge Base for any notational info on multi-OS
Mounting a Win95-modified DOS partition in SCO _may_ cause problems. SCO
handles the standard DOS stuff just fine, but not the FAT32 (long file
names) or VFAT (the real name, the other one is just my name or it). You
risk problems in Win95 (I suspect) if you modify certain files.
Fortunately, the Win95 program files still follow the 8.3 convention, and
only give long names to the shortcuts used in startup menues.
The resulting startup looks like this: POST completes and you get the
Boot:. You type either Unix or DOS, or hit enter for the default in
/etc/default/boot (or let it time out to the default). If DOS, you see
"Starting Windows95..." then get the aforementioned startup menu. You
either select the previous version of DOS (option 8 I think) or let it
time out into Win95.
I used a configuration like this to boot from SCO's Boot:, to DOS'
multi-config (config.sys) to Linux (loadlin.exe), all on one machine. I
had the chance, therefore, to start any of the three, in that order.
Scot Harkins (KA5KDU) | Systems Administrator, Thurman Ind, Bothell, WA
Renton, WA | Native Texan. Proud daddy and husband!