grub problem - please help!

[Neil Bird]

   [cut down version of something I've tried to post N times now;  it
just keeps disappearing somewhere ... ]

   Essentially, if I boot of a CD with grub on, I get the menu OK, but
trying to actually bot gives me 'error 25: disk read error'.  Hitting
'c' for the command line and typing the commands in the grub.conf
verbatim (below: root/kernel/initrd) followed by 'boot' works though.

   Why might there be a difference?


default 0
prompt 1
splashimage (hd0,4)/grub/splash.xpm.gz
timeout 4

title Linux
   root (hd0,4)
   kernel /vmlinuz root=/dev/VolGroup00/LogVol00
   initrd /initrd.img

-- 
[neil at fnx ~]# rm -f .signature
[neil at fnx ~]# ls -l .signature
ls: .signature: No such file or directory
[neil at fnx ~]# exit