how to understand this boot option?

[Endy]

lin q wrote:

> Hi,
>  My machine has Fedora Core 1 installed and its grub.conf is like this,
>
> default=0
> timeout=10
> splashimage=(hd0,0)/grub/splash.xpm.gz
> title Fedora Core (2.4.22-1.2115.nptl)
>     root (hd0,0)
>     kernel /vmlinuz-2.4.22-1.2115.nptl ro root=LABEL=/12 ide=nodma rhgb
>     initrd /initrd-2.4.22-1.2115.nptl.img
>
>  It is really hard for me to interprete "root=LABEL=/12 ".
>
>  Normally what I see is like, "root=/dev/hda1 LABEL=/" which makes 
> sense to me. But the above is hard to read.
>
>  What is the value of "root" and "LABEL"? What "/12" mean?
>
> Thanks.
>
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are there multiple partitions? udev will set labels such as /1 and /2 
for different / partitions to differentiate them, i think.