Re: [gentoo-installer] Grub causing kernel panic? - ThinkPad T40 - new install

[George Prowse <cokehabit2003@yahoo.co.uk>]

Greg Morin wrote:
> All: thank-you for the help so far. I have posted this on gentoo-user as 
> well, and will continue to work with folks individually here or 
> publically on that list.
> 
> The responses so far have helped - Bigfish (Richard), I may respond 
> directly to your RFI as you may be able to pinpoint the driver(s) I'm 
> missing. I have added driver support in newly compiled kernels and 
> gotten different errors - but I think I'm close.
> 
> Again all - thanks. I'll pursue on gentoo-user...
> 
> Gpm
> 
> On 11/3/06, *Ladislav Laska* <ladislav.laska@gmail.com 
> <mailto:ladislav.laska@gmail.com>> wrote:
> 
>     Andrew is right, this is wrong list. Anyway, you should check that
>     modules for your IDE controller are loaded in initrd (or compiled into
>     kernel).
> 
>     You can do this by selecting the second choice in grub (rescue). It
>     will boot into busybox (a very basic shell) and you should be (un)able
>     to mount filesystems. I don't know what exactly will busybox do for
>     your, but maybe you will need to create device node by hand.
> 
>     For more informations, please write to gentoo-user list, or contact me
>     personally (but NOT this list, unless this is gentoo-installer's
>     problem).
> 
>     On 11/3/06, Greg Morin <gpmorin@gmail.com
>     <mailto:gpmorin@gmail.com>> wrote:
>      > Good day,
>      >
>      >  I've installed (several times) on a ThinkPad T-40, trying both
>     manual
>      > kernel config and genkernel. I followed the online manual
>     explicitly (I
>      > think). The machine is currently loaded with the manual config.
>     Either way,
>      > the results are similar.
>      >
>      >  Grub shows the two boot options, then begins loading the OS.
>      >
>      >  The machine begins to boot, starts loading modules, then kernel
>     panics:
>      >     VFS:Cannot open root device "hda3" or unknown-block(0,0)
>      >     Please append a correct "root=" boot option
>      >     Kernel panic - not syncing: VFS: Unable to mount root fs on
>      > unknown-block(0,0)
>      >
>      >  There is a single fixed disk:
>      >     Device        Boot    
>     Size    System          Filesystem        Mount
>      > point
>      >     =======   ====    ===== =========   =========      =========
>      >     /dev/hda1       *        32M    Linux             ext2
>      > /boot
>      >     /dev/hda2                3G      Linux swap     none
>      > none
>      >     /dev/hda3                ~71G  Linux              ext3
>      > /
>      >
>      >  I am able to mount and use these partitions after booting from CD.
>      > /etc/fstab (/mnt/gentoo/etc/fstab when booted from disk) looks good.
>      >
>      >  Filesystems ext2 and ext3 are compiled into the kernel.
>      >
>      >  Grub details:
>      >     device.map
>      >          (hd0)   /dev/hda
>      >     grub.conf
>      >          default   0
>      >          timeout   5
>      >          splashimage=(hd0,0)/boot/grub/spash.xpm.gz
>      >
>      >          title=Gentoo Linux 2.6.17-r8
>      >          root (hd0,0)
>      >          kernel /boot/kernel-2.6.17-gentoo-r8 root=/dev/hda3
>      >
>      >          title=Gentoo Linux 2.6.17-r8 (rescue)
>      >          root(hd0,0)
>      >          kernel /boot/kernel-2.6.17-gentoo-r8 root=/dev/hda3
>     init=/bin/bb
>      >
>      >     I used grub-install /dev/hda with no errors. I've played
>     around with the
>      > "root=" entry, but to no avail - not sure I'm understanding this
>     one...
>      >
>      >  The kernel image appears to be valid, with no typos in filename/grub
>      > entries.
>      >
>      >  Any ideas? Seems that the kernel begins to load, but can't mount
>     the root
>      > filesystem?
>      >
>      >  Thank-you for any pointers.
>      >
>      >
>      > --
>      >

There are also about 1000 posts about this on the forums and on the 
"installing Gentoo" forum there is a specific thread on Grub errors and 
how to deal with each one.

George

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