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From: Tom H on 30 Nov 2009 11:10
Johannes Graumann <johannes_graumann(a)web.de> wrote:
>> A recent update of both my home machines running sid pulled in an update of
>> grub2. Now both machines are stuck with the grub menu showing up fine, but
>> no matter which kernel I choose, I always end up with this error:
>> "error: you need to load the kernel first"
>> Does anyone here have an idea what might be going wrong and how to fix it?

Michael Wagner <michaeldebian(a)web.de> wrote:
> at the moment 'grub-pc' is broken in sid. When you have a separate /boot
> partition, the package generates a wrong '/boot/grub/grub.cfg'. Look at
> the BTS for bug #558042. There is also the workaround for the problem.

grub-pc is broken when you have a separate /boot partition for any
distribution see for example:

https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/442631

Both the "set root=..." and the "search ..." lines point to / rather
than to /boot.

You can create a correct menuentry in 40_custom and re-run grub-mkconfig.


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From: Tom H on 2 Dec 2009 18:10
>> >>at the moment 'grub-pc' is broken in sid. When you have a separate /boot
>> >>partition, the package generates a wrong '/boot/grub/grub.cfg'. Look at
>> >>the BTS for bug #558042. There is also the workaround for the problem.

>> I ran across the same problem, but I am running mdraid RAID 1, which
>> complicates matters, and root (/) is on an LVM2 volume.

> do you get grub? and where is /boot (I'm assuming it's on RAID but not
> lvm)?

> Based on what others have written, editting the grub entries from the
> grub command line should do the trick. Point grub at the right device
> and partitions and it should just work.

If you are getting to the grub cli, you need to insmod the raid/lvm
modules depending on whether you use raid/lvm for /boot before running
the root-linux-initrd-boot sequence.


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