Grub doesn't fire up /dev/md0 raid1

[daniel . stender]

Hi guys,

I've bought a new set of harddisk and build up a fresh raid1 /dev/md0,  
tarballed my old fileystem to that, made chroot from a LiveCD here and  
made grub-install and
update-initramfs (did: mount -o bind /dev /mnt/dev & -t proc /proc  
/mnt/proc) -
everything works without errors but Grub2 does not find the raid chain  
/dev/md0 and hangs after the menu.

Can anybody help?

Greetings,
Daniel Stender (Hamburg)