I've upgraded the hdd in my macbookpro 5,5 and after installing OSX and refit and copying the ubuntu to its partition with rsync and the live CD, I am now stuck with the problem that refit won't recognize my linux partition.
After reading some forums/wikis etc. I've understood that grub has to be on a partition with linux. However, I'm not able to install grub with
Code:
grub-install --root-directory=[UUID] /dev/sda
,
because the MBR of the hdd is not found. According to Refit, there is a mbr and it looks like it's ok... Grub could be installed with blocklists (that's what it says in the error message), however I have no idea what that means and if that is what I want.

Do you have any ideas how I could install grub so that my linux partition is found by refit?