menu.lst problems

[Rashkae]

Peter Hillier-Brook wrote:
> Hello all,
> 
> is there anyone who can help to stop my head hurting? After a trivial 
> edit of menu.lst to fix a couple of options, I can no longer boot the 
> default kernel (Error 15: File not found), although I can boot from the 
> recovery version and, at the appropriate time, select to continue 
> normally. I can see no differences and therefore I suspect that I'm 
> missing the obvious, whatever that might be.
> 
> The relevant fragment of menu.lst follows.
> 
> title		Ubuntu 8.10, kernel 2.6.27-11-generic
> uuid		a42730ca-039c-485d-a153-c367d8ef4f51
> kernel	 
> /vmlinuz-2.6.27-11-genericroot=UUID=1d77c373-b6c8-41ba-bb0f-2f2a99d88df8 ro
> initrd		/initrd.img-2.6.27-11-generic
> quiet
> 
> title		Ubuntu 8.10, kernel 2.6.27-11-generic (recovery mode)
> uuid		a42730ca-039c-485d-a153-c367d8ef4f51
> kernel		/vmlinuz-2.6.27-11-generic 
> root=UUID=1d77c373-b6c8-41ba-bb0f-2f2a99d88df8 ro  single
> initrd		/initrd.img-2.6.27-11-generic
> 
> Whilst on this topic, I also tried to manually use update-grub to detect 
> the -11 kernel which should have been automatically added to menu.lst 
> (the relevant entries are in kernel-img.conf), but wasn't. It claimed to 
> be doing the job, but the result was an unchanged menu.lst.
> 
> Ant thoughts gratefully received.
> 
> Peter HB
> 

This issue has been resolved, but if I can be forgiven to hijack the
thread for a related question.

What is this new uuid in menu.lst?

I notice that the entries no longer have a root (0,0) type line, which
in the old days, was used by grub to identify the /boot partition where
the kernel and initrd files were to be found.  Has that been replaced
with the uuid a42730ca-039c-485d-a153-c367d8ef4f51 ?

And to the OP, do you have a separate /boot?  That would explain why
your grub uuid and your kernel option root= are different.