Use of labels in grub.conf

[Gene Heskett]

Greetings;

My old 233mhz P-II needs all the help it can get, so I was compiling a 
stripped down kernel.  But I couldn't boot to it (no initrd, just 
modules) using the root=LABEL=/ in the grub command line.

Fooled with it for several hours, then decided to use root=/dev/hdax 
instead.  Worked first time.

What is it that allows the default FC2T3 kernel to use labels while 
its booting, but when I duplicate the grub entry but with the newer 
vmlinuz name, I have to use root=/dev/hda8?

-- 
Cheers, gene