SV: SV: [suse-axp] AS1000/200 Mikasa booting

From: Lennart Börjeson (LennartB@cinnober.com)
Date: Thu Jun 07 2001 - 05:21:45 PDT

  • Next message: James Oakley: "Re: SV: SV: [suse-axp] AS1000/200 Mikasa booting" 

    Message-ID: <E536C8EE2A1FD31195370008C79FFA1F217042@world.cinnober.com>
From: Lennart Börjeson <LennartB@cinnober.com>
Date: Thu, 7 Jun 2001 14:21:45 +0200 
Subject: SV: SV: [suse-axp] AS1000/200 Mikasa booting

    Geocrawler isn't up now, so I can't check that link. (It has said
    something about "nightly maintenance" and "check back in 10-15
    minutes" the whole day now...)

    Anyway, I suppose you've found something about swriteboot. You
    abosolutely must let swriteboot write the "boot block" on the drive
    you intend to let SRM boot from. But, as you concluded, you must
    reserve space for the boot block by leaving the first cylinder
    unpartitioned. swriteboot does not wipe the partition table.

    You can definitely have just one drive disklabel partitioned and the
    others DOS partitioned. (If you don't manage to use both
    simultaneously on one drive.)

    yast has always had problems mixing DOS and disklabel partitions
    (but the problems are less now), you should probably play safe by
    setting up the partitions manually.

    /Lennart

    -----Ursprungligt meddelande-----
    Från: James Oakley [mailto:jfunk@funktronics.ca]
    Skickat: den 7 juni 2001 02:16
    Till: Lennart Börjeson; suse-axp@suse.com
    Ämne: Re: SV: [suse-axp] AS1000/200 Mikasa booting

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    On June 5, 2001 05:58 am, Lennart Börjeson wrote:
    > Please excuse if I am mistaken, but I think you can have both DOS and
    > disklabel partition tables at the same time. Just make sure they match!
    >
    > My gut feeling is that this ought to be impossible; isn't both kind of
    > tables stored in the same place? But I believe I had such a setup up
    > and running once. I created both DOS and disklabel partitions from the
    > shell.
    >
    > (I have an AS200 which currently runs SuSE 6.4, NT and W2k. I thus boot
    > it from ARC, but I have experimented with booting Linux from either SRM
    > or ARC when I also had VMS on it. It was easier to switch O/S:s when I
    > didn't have to also switch console. But I no longer have that setup
    > active, so I can't check.)

    Ok, I managed to boot in a haphazard way with SRM (dka600 is my CDROM):

    >>> boot dka600 -fl i
    ...
    aboot> b 1/vmlinux.gz root=/dev/sda2

    This worked, but I compiled my own kernel so the one on the CD is not the
    one
    I want (my network doesn't come up) and SRM seems to only be able to boot a
    kernel from the disk it resides on.

    I did find this interesting post:
    http://www.geocrawler.com/archives/3/86/2000/2/0/3372007/

    Would this be ok? I can easily repartition /dev/sda1 to start at cylinder 2.

    I'm just worried that swriteboot might wipe my partition table entirely. I
    am
    a complete newbie to disklabels, SRM, etc.

    If that doesn't work, would I be able to simply wipe /dev/sda and recreate
    it
    using BSD disklabels, while keeping the other drives DOS-partitioned? I
    tried
    installing 7.1 using aboot before, but LVM didn't work during the install.
    YaST put disklabels on all of my drives...

    Thanks,

    - --
    James Oakley
    jfunk@funktronics.ca
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