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- Newsgroups: comp.unix.sysv386,comp.unix.i386
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!n8emr!elektro!charlie
- From: charlie@elektro.cmhnet.org (Charlie Smith)
- Subject: HELP: co-install OS/2, UNIX, MSDOS ?
- Message-ID: <1992Dec20.052415.4353@elektro.cmhnet.org>
- Sender: charlie@elektro.cmhnet.org (Charlie Smith)
- Organization: Why do you suspect that?
- Date: Sun, 20 Dec 92 05:24:15 GMT
- Lines: 66
-
- About a week ago I posted a similar question, and got several helpful
- responses. Here's the situation, I have a 320MB hard disk partitioned
- as follows:
-
- P1 MSDOS 20 MB Primary partition
- P2 UNIX 210 MB UNIX Partition, this one marked active
- P3 OS/2 90 MB Primary partition (now)
-
- The previous question was how to get OS/2 Version 1.3 installed in P3 without
- messing with the MSDOS in P1. The UNIX partition and the MSDOS partition
- are already installed and set up. The UNIX partition is Interactive i386
- UNIX Version 3.0, which includes something like the OS/2 boot manager that
- always gets control before UNIX boots up - asking you which partition you
- want to boot.
-
- At that time, when I tried to install OS/2, it wanted to overwrite the MSDOS
- partition, and it complained loudly that it didn't have enough space.
-
- The responders several suggestions all talked about putting OS/2 boot manager
- into a 1 MB P4, and then using the OS/2 FDISK to create P3 as "installable"
- and to go from there.
- ................
-
- After a lot of around and around gyration with ill documented OS/2 stuff,
- such as FDISK refusing to run without command line parameters, I resorted
- to using the Zenith MSDOS 3.30+ which will let you create multiple
- primary partitions on a hard disk. I set P3 up as a 90 MN primary partition
- and deleted the MSDOS P1 primary partition. Now when I installed OS/2,
- it went exactly where I wanted it to, into P3. So far so good.
-
- After re-flagging P2 as the active partition, I found that the Interactive
- UNIX "boot manager" will let me choose between UNIX and OS/2 just fine,
- BUT: as soon as I recreate the P1 partition as a MSDOS primary partition,
- OS/2 refuses to boot; actually, it does boot and then about 5 seconds later
- it craps out with a TRAP 00D code and dumps the registers. It doesn't do
- this if the OS/2 partition is the only primary partition.
-
- I've got to have the MSDOS partition as a primary partition in order to
- mount it under UNIX as a file system - this way UNIX and MSDOS running
- under UNIX (with vpix) can get to the MSDOS data in P1. Also, if the
- partition with OS/2 isn't a primary partition then the UNIX boot selector
- doesn't think it's bootable and doesn't let you select it.
-
- After all that windup, here's the question: does anyone know how to get
- OS/2 to stop noticing that there is another primary partition when it
- boots?
-
- More background: some digging into past postings about OS/2 and Win/NT
- incompatibilities makes me think that in order for OS/2 boot manager to
- be able to offer a partition as bootable, it must have a file of some
- sort on the target partition. This is out of the question for the UNIX
- partition for several reasons, not the least of which is that it is not
- a FAT based file structure, and that UNIX is extremely touchy about wanting
- it's file systems to be just so.
-
- Any help will be appreciated. Right now, to boot OS/2 I've got to "delete"
- the P1 partition with MSDOS, and to "add" it back to either boot MSDOS or
- to access the MSDOS data from UNIX. Fortunately, I can do this without
- destroying / rebuilding the partition's data.
-
-
- Charlie Smith charlie@elektro.cmhnet.org csmith@dsac.dla.mil whois ces10
- Eves: 614-471-1418 Days: 614-692-9064 FAX: 614-692-8217
- elektro.uucp TB WorldBlazer 614-471-9416 for anonymous uucp
- Columbus Ohio USA
-
-