grub error 15 with 2.6.24-19 and -20 rt kernel

[Mark Falcey]

I have recently installed ubuntustudio-audio i386 8.04.1. which includes linux kernel 2.6.24-19rt. After installation grub reported "error 15 file not found". The kernel was correctly listed in the grub menu.lst, identically to the generic kernel with the only difference being the -rt. All the files seemed to be in the right place. The -19 generic kernel booted with no problem. I eventually removed the -19rt kernel.

 Today, I got the same exact circumstance after updating to the -20rt kernel and the -20 generic kernel.
grub version 0.97-29ubuntu21

relavent section of menu.lst:

title Ubuntu 8.04.1, kernel 2.6.24-20-rt
root (hd2,0)
kernel /boot/vmlinuz-2.6.24-20-rt root=UUID=a5c2583d-0661-4b1d-83e4-21d819f49e8d ro quiet splash
initrd /boot/initrd.img-2.6.24-20-rt
quiet

title Ubuntu 8.04.1, kernel 2.6.24-20-rt (recovery mode)
root (hd2,0)
kernel /boot/vmlinuz-2.6.24-20-rt root=UUID=a5c2583d-0661-4b1d-83e4-21d819f49e8d ro single
initrd /boot/initrd.img-2.6.24-20-rt

title Ubuntu 8.04.1, kernel 2.6.24-20-generic
root (hd2,0)
kernel /boot/vmlinuz-2.6.24-20-generic root=UUID=a5c2583d-0661-4b1d-83e4-21d819f49e8d ro quiet splash
initrd /boot/initrd.img-2.6.24-20-generic
quiet

title Ubuntu 8.04.1, kernel 2.6.24-20-generic (recovery mode)
root (hd2,0)
kernel /boot/vmlinuz-2.6.24-20-generic root=UUID=a5c2583d-0661-4b1d-83e4-21d819f49e8d ro single
initrd /boot/initrd.img-2.6.24-20-generic

I do not have this problem with my amd64 ubuntustudio on the same machine on a different hard drive, the -19 and -20rt and generic kernels cause no errors from that grub and boot normally.

I have separate grubs for each hard drive and the drives are correctly mapped in device.map

[Erich Eickmeyer (eeickmeyer)]

Ubuntu Studio no longer uses an RT kernel, and the kernel mentioned in this is ancient.