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Hi, I am trying to boot RHEL4 which is loaded on a USB hard drive. I have GRUB installed. On power on, GRUB starts loading and all of a sudden ...
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  1. #1
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    RHEL 4/USB hard drive


    Hi,
    I am trying to boot RHEL4 which is loaded on a USB hard drive. I have GRUB installed. On power on, GRUB starts loading and all of a sudden it gives an error saying unable to mount the partition, press any key to continue. Upon any key stroke, it takes me to a window where I could select "RHEL 4" to boot, which takes me back to the GRUB. I tried to load the kernel and initrd manually from the GRUB prompt and boot the kernel. It says it cannot mount the partition and throws a Kernel Panic - Error mounting VFS.

    Can anybody give me some ideas on how to troubleshoot this?

    Thanks, SJ

  2. #2
    Super Moderator devils casper's Avatar
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    boot up in 'linux rescue' mode through Installation CD/DVD and post the contents of /boot/grub/grub.conf and /boot/grub/device.map files.
    you can use any LiveCD too.






    Casper
    It is amazing what you can accomplish if you do not care who gets the credit.
    New Users: Read This First

  3. #3
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    grub.conf :
    default=0
    timeout=5
    splashimage=(hd1,0)/grub/splash.xpm.gz
    hiddenmenu
    title Red Hat Enterprise Linux ES (2.6.9-5.EL)
    root (hd1,0)
    kernel /vmlinuz-2.6.9-5.EL ro root=/dev/VolGroup00/LogVol00 rhgb quiet
    initrd /initrd.img
    title Other
    rootnoverify (hd0,0)
    chainloader +1


    devices.map
    # this device map was generated by anaconda
    (fd0) /dev/fd0
    (hd0) /dev/hda
    (hd1) /dev/sda

    Here are the two files. Thanks for your help.

  4. #4
    Super Moderator devils casper's Avatar
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    grub is installed on internal drive. first of all remove that. boot up from Windows Installation CD, select 'repair' and execute 'fixmbr'.
    Plug-in External Drive as Primary Master and 'First Boot Device' in BIOS. boot up from RH installation CD/DVD and execute this code at boot: prompt
    Code:
    linux rescue
    chroot /mnt/sysimage
    grub-install /dev/sda  --recheck
    press Ctrl+D two times.






    Casper
    It is amazing what you can accomplish if you do not care who gets the credit.
    New Users: Read This First

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