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GRUB can't see the hard drive, booting windows fail in dual bootenviroment - Linux Setup, Configuration & Administration

Hi All, I spent several hours looking for a solution for this problem. Any help is highly appreciated. My PC has two hard drives - first one (80 GB) has Windows 2000 installed in it with three partitions and second one (4 GB) has Linux (Redhat 9) installed. I setup GRUB for the dual boot but when I select "DOS", it fails with following message: "rootnoverify (hd0,0) chainloader +1 Error 21: Selected disk does not exist" I can boot Linux successfully and "fdisk -l" does show hd0 as well as hd1. The GRUB shell from Linux also shows hd0 and ...

  1. #1

    Default GRUB can't see the hard drive, booting windows fail in dual bootenviroment

    Hi All,
    I spent several hours looking for a solution for this problem. Any help is
    highly appreciated.

    My PC has two hard drives - first one (80 GB) has Windows 2000 installed in it
    with three partitions and second one (4 GB) has Linux (Redhat 9) installed. I
    setup GRUB for the dual boot but when I select "DOS", it fails with following
    message:

    "rootnoverify (hd0,0)
    chainloader +1

    Error 21: Selected disk does not exist"

    I can boot Linux successfully and "fdisk -l" does show hd0 as well as hd1. The
    GRUB shell from Linux also shows hd0 and hd1. So it looks like, GRUB doesnt see
    hd0 during the boot but Linux does see it after the boot.

    Before I put the second disk, there was Linux on the first disk (3rd partition)
    and I could boot both DOS and Linux without any problems.

    Thanks for any help.

    Kamal

    Kamal Guest

  2. #2

    Default Re: GRUB can't see the hard drive, booting windows fail in dualboot enviroment

    On Mon, 17 Nov 2003 15:26:39 -0600, Kamal Hussain <com> wrote:
     

    .... show us the output of:
    fdisk -l /dev/hd*
    ..
    --
    /// Michael J. Tobler: motorcyclist, surfer, skydiver, \\\
    \\\ and author: "Inside Linux", "C++ HowTo", "C++ Unleashed" ///
    Good day to avoid cops. Crawl to school.
    mjt Guest

  3. #3

    Default Re: GRUB can't see the hard drive, booting windows fail in dual

    I've been playing with this for a while. It looks like GRUB doesn't recognize
    the hard drive. I suspect it is a problem between BIOS and GRUB interaction. I
    am able to boot from floppy and after the boot, Linux can see both drives. Here
    is the fdisk -l output:

    Disk /dev/hdd: 4311 MB, 4311982080 bytes
    240 heads, 63 sectors/track, 557 cylinders
    Units = cylinders of 15120 * 512 = 7741440 bytes

    Device Boot Start End Blocks Id System
    /dev/hdd1 * 1 14 105808+ 83 Linux
    /dev/hdd2 15 488 3583440 83 Linux
    /dev/hdd3 489 557 521640 82 Linux swap

    Disk /dev/hda: 120.0 GB, 120034123776 bytes
    240 heads, 63 sectors/track, 15505 cylinders
    Units = cylinders of 15120 * 512 = 7741440 bytes

    Device Boot Start End Blocks Id System
    /dev/hda1 * 1 2709 20480008+ 7 HPFS/NTFS
    /dev/hda2 2710 15504 96730200 f Win95 Ext'd (LBA)
    /dev/hda5 2710 8127 40960048+ 7 HPFS/NTFS
    /dev/hda6 8128 8141 105808+ 83 Linux
    /dev/hda7 8142 15435 55142608+ 83 Linux
    /dev/hda8 15436 15504 521608+ 82 Linux swap


    If I disable LBA for the /dev/hda, GRUB just puts me into the prompt. I dont get
    the normal, DOS or Linux option during the boot. Tried auto completion using
    "tab" and it shows only fd0. If LBA is enabled, GRUB just hangs!
    Then I switched to LILO and it is able to boot Linux properly but if DOS is
    chosen, I get a blank screen...

    Any ideas?

    Thanks
    Kamal



    On 11/17/2003 4:03 PM, mjt wrote: 
    >
    >
    > ... show us the output of:
    > fdisk -l /dev/hd*
    > .[/ref]

    Kamal Guest

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