grub 2 problems ??

[steef <debian.linux@home.nl>]

hi list,

for years (from potato/woody on) i have mounted 3 hd' s in my machine 
(independently installed from each other with debian, somtimes slackware 
and/or gentoo) from one specific hd with/after the command #mkdir 
/mnt/sdx, mnt/sdy etc.  and in fstab  /dev/sdx  /mnt/sdx ext3 user  0  0 
&& (to keep it simple). on each hd i had a bootloader (lilo and later 
grub) installed.

with grub2 as bootloader under squeeze i cannot mount other hd's anymore 
when independently on the *other* hd' s a bootloader (grub2) in the mbr 
is installed. without installing grub2 in the mbr of a sata-hd the hd on 
which i am mounting *does* recognize the other hd *with the exception of 
(old) ata hd's.

my question: what do i miss if anything? or is this normal for the new 
grub? is there anything to do about this? has this got to do with 
UUID-numbers?

reg.,

steef