RE: Two OS - boot?

From: Wade Chandler (wchandler_at_redesetgrow.com)
Date: 09/04/03

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    To: <redhat-list@redhat.com>
Date: Thu, 4 Sep 2003 11:38:35 -0400

    It doesn't sound like you have choosen to use LILO or GRUB. I've used
    both and do exactly what you are wanting to do....I think you are over
    complicating the situation. Install LILO or GRUB to your MBR for your
    linux disk if you want....the linux vmlinuz boot up will not be in the
    MBR.....then setup LILO or GRUB to boot you windows as well...and change
    your BIOS to point to that disk to boot and leave it.

    The RH9 install is easy to use and you can use it to setup grub or lilo.
    Like I said I'm booting 3 OS. No problem and I don't need anything
    else. Windows boot up doesn't need to even be in the MBR.....just point
    the partition windows is installed in using lilo or grub either or and
    it will work for you. LILO and GRUB are boot managers. They don't just
    boot Linux. I'm not sure by your reluctance if you understand this.
    They work for me and I have the same setup you have....good luck.

    P.s. Lilo or Grub will come up in graphical mode and you can select
    which os to boot. If you install Windows last don't worry about
    it....just rerun install...choose to update.....resetup your boot
    manager.....I'm constantly changing my machines around for fun and I
    never have a problem. Two disks and 3 os currently. ;-)

    Wade

    -----Original Message-----
    From: redhat-list-admin@redhat.com [mailto:redhat-list-admin@redhat.com]
    On Behalf Of Sasa Stupar
    Sent: Thursday, September 04, 2003 7:52 AM
    To: redhat-list@redhat.com
    Subject: Re: Two OS - boot?

    Otto Haliburton pravi:
    > It sounds to me if you want to do what you want to do. Then use a
    > removable disk that is bootable. If you want to boot win2k install
    > the removable win2k disk. If you want linux install the removable
    > linux disk. With hard drives I don't think it is possible to have
    > each independent without going through some gyration. When you boot
    > the hardware wants to report all drives and thus the OS wants to mount

    > it and if it doesn't recognize the partitions then you get an error.
    > So what you are wanting is probably unrealistic and frankly IMHO is
    > totally useless.
    >
    >
    >>-----Original Message-----
    >>From: redhat-list-admin@redhat.com [mailto:redhat-list-
    >>admin@redhat.com] On Behalf Of Sasa Stupar
    >>Sent: Thursday, September 04, 2003 6:25 AM
    >>To: redhat-list@redhat.com
    >>Subject: Re: Two OS - boot?
    >>
    >>Cowles, Steve pravi:
    >>
    >>>Sasa Stupar wrote:
    >>>
    >>>
    >>>>The thing is that I still want to be able to boot any of the systems

    >>>>independently. This means I want to leave intact the MBR of each
    >>
    >>disk.
    >>
    >>>
    >>>I use a slightly different approach to dual booting. Maybe it will
    >>
    >>work for
    >>
    >>>you.
    >>>
    >>>I have linux installed on one hard drive with grub installed in MBR
    >>
    >>and W2K
    >>
    >>>installed on the other harddrive with its boot loader installed in
    >>
    >>MBR. If I
    >>
    >>>want to boot to linux, I set my systems BIOS boot order to "C-
    >>
    >>Drive". If I
    >>
    >>>want to boot to W2K, I set my systems BIOS boot order to "D-Drive".
    >>
    >>Works
    >>
    >>>great!
    >>>
    >>>The keys to success (at least with my motherboard):
    >>>
    >>>1) I installed each OS without knowledge of the other harddrive.
    >>
    >>i.e. I
    >>
    >>>removed the cables so the BIOS only saw one harddrive. Then after
    >>
    >>both OS's
    >>
    >>>were loaded...
    >>>
    >>>2) Linux/grub harddrive cabled/jumpered as master on the primary IDE
    >>
    >>bus.
    >>
    >>>3) W2K harddrive cabled/jumpered as master on the secondary IDE bus.
    >>>
    >>>4) Now go into BIOS and change boot order to C -or- D drive.
    >>>
    >>>Note: Since Windows/W2K (in my case) does not understand the linux
    >>
    >>ext2/3
    >>
    >>>filesystem type , it will try to mount the linux harddrive at bootup
    >>
    >>and
    >>
    >>>cause some major disk thrashing while attempting to do so. To fix
    >>
    >>this
    >>
    >>>problem, I had to disable the linux harddrive in device manager.
    >>>
    >>>Steve Cowles
    >>>
    >>>
    >>
    >>This is how I have done it. But to avoid constantly changing in the
    >>BIOS I have made also a bootdiskette for linux.
    >>
    >>
    >>--
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    >
    >
    >
    Thank you all guys for answers. 

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