[PLUG] Grub error 21 on reboot

[Rich Shepard]

On Tue, 6 Feb 2007, eehouse.org wrote:

> Like a child at his birthday party I downloaded the 2.6.20 patch yesterday
> and built me a new kernel.  This caused me to reboot my machine for the
> first time since 2.6.19 was released, and it won't get past Grub's stage
> 1.5.

Eric,

   You write that you downloaded the patch for .20. Did you use it to patch
the .19 source? If not, you can't build a complete kernel from the patch
file.

> ... but have run 'apt-get upgrade' every other day or so.

   Why?

> Can anyone suggest what's wrong here?

   Two things. First, try building from the full kernel source instead of a
patched file. Second, while it's been a long time since I saw GRUB rather
than LILO, you should be able to boot into the kernel you used before and --
according to Carla's Most Excellent Book -- you can get a command line to
fix boot problems.

Rich

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