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Re: [fedora-list] How do a fix a non working kernel installation ?



linux guy wrote:
I downloaded the supergrub iso and installed it onto my usb drive.
When I boot from it, it gives me the grub> command line.  Is that a
sign I don't have the USB installation right or is that the tool that
I am supposed to use to fix my non booting drive ?

Thanks

On 7/16/09, linux guy <linuxguy123 gmail com> wrote:
Here is my grub file.  The boot partition is /dev/sda1.  That should
be hd0,0, right ?    The root partition is sda2.  That should be
hd0,1, right ?

Does anyone see anything wrong with my grub setup ?

I don't understand how installing an f12 kernel and then uninstalling
it could still result in a machine that won't boot.   Does f12 assume
an ext4 filesystem or something ?  df thinks my file systems are all
ext3.

Thanks

default=0
timeout=15
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.29.5-191.fc11.i586)
        root (hd0,0)
        kernel /vmlinuz-2.6.29.5-191.fc11.i586 ro
root=UUID=f543d554-9344-4cad-a7da-47de47cd2665 rhgb quiet
        initrd /initrd-2.6.29.5-191.fc11.i586.img
title Fedora (2.6.29.4-167.fc11.i586)
        root (hd0,0)
        kernel /vmlinuz-2.6.29.4-167.fc11.i586 ro
root=UUID=f543d554-9344-4cad-a7da-47de47cd2665 rhgb quiet
        initrd /initrd-2.6.29.4-167.fc11.i586.img

On 7/16/09, Rich Mahn <rich lat com> wrote:
I did that, twice, first off, before I ever posted to the group.   The
f12 kernel installed to default 0 and then I had 2 f11 2.6.29 kernels
in positions 1 and 2.  I changed the default to both of them and
neither would boot.
I have had this problem often when I've been moving disks around or
when I am testing out new operating systems.  It has always been
one of two things:

  1. the BIOS has reordered disks and you aren't booting from the
     disk you want, or
  2. (similar to above), the disk identified in grub is the wrong one
     and needs to be dhanged.  Where you see something like
     root (hd0,0), you may need to change it to root(hd1,0).

This can sometimes be caused by a USB device being present (or not).
If you loaded your OS with a USB drive, it may have shifted all the
hd's when creating the grub.conf file.


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I can't say for certain about the USB method, I just burn it to a CD, and after I am done with the CD I put it into a tool kit/cd wallet I use so I haven't tried that option. It should boot to a menu system with the fix action options there, since you are getting just the grub prompt I would venture a guess the USB key is wrong

~Seann

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