I own a macbook pro (Fourth generation) and I triple boot Microsoft XP, Leopard, and Ubuntu 8.10. I have installed rEFit to boot these and when I hold down "alt" at start up I have no trouble finding the option to select "boot Ubuntu from hard drive" but whenever I do it shows the penguin on a white screen then turns to a black screen with just a blinking "_" in the top left corner.
Here is the report Partition Inspector gave me if it's any help.
*** Report for internal hard disk ***
Current GPT partition table:
# Start LBA End LBA Type
1 40 409639 EFI System (FAT)
2 409640 413024295 Mac OS X HFS+
3 413286440 444743719 Basic Data
4 445005864 488397127 Basic Data
Current MBR partition table:
# A Start LBA End LBA Type
1 1 488397167 ee EFI Protective
MBR contents:
Boot Code: None
Partition at LBA 40:
Boot Code: None (Non-system disk message)
File System: FAT32
Listed in GPT as partition 1, type EFI System (FAT)
Partition at LBA 409640:
Boot Code: None
File System: HFS Extended (HFS+)
Listed in GPT as partition 2, type Mac OS X HFS+
Partition at LBA 413286440:
Boot Code: GRUB
File System: ext3
Listed in GPT as partition 3, type Basic Data
Partition at LBA 445005864:
Boot Code: Windows NTLDR
File System: FAT32
Listed in GPT as partition 4, type Basic Data
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