Boot XServe 2.1 from Grub2 on bootable CD

[Shkarupa Xeniya]

I want to install linux on XServe 2.1 using grub2 as bootloader.

I created bootable CD and blessed directory with grub64.efi in it on CD.

XServe can boot from grub64.efi and show grub prompt. Problem is grub can not detect data on CD.

Grub output:

grub> ls

(hd0) (hd1) (hd1,5) (hd1,4) (hd1,3) (hd1,2) (hd1,1)

grub> ls -l

Device hd0: Partition table

Device hd1: Partition table

               Partition hd1,5: Unknown filesystem

               Partition hd1,4: Filesystem type ext2, Label /, Last modification...

               Partition hd1,3: Filesystem type ext2, Label /boot1, Last modification...

               Partition hd1,2: Filesystem type hfsplus, Last modification...

               Partition hd1,1: Filesystem type fat, UUID ...

grub> ls (hd0)/

error: unknown filesystem

Question: Does grub work with Apple Partition Map? Or in other words: what modules need to include to grub detect data from bootable Mac OS CD?

PS: I try to use hybrid CD, grub2 detects them as ISO9660 can see data on them. But XServe doesn't detect hybrid CD as bootable. Any help will be appreciated.