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Today I installed Mac OS X Lion alongside with Linux (mint) and Windows 7.

To be able to boot into Linux, i've downloaded rEFIt. It opens, I see the Mac and the Windows partition in it, but not the Linux partition. I've reinstalled Linux several times, but it just wont work.

I checked out the partition app from rEFIt, and got these results:

Current GPT partition table:
 #      Start LBA      End LBA  Type
 1             40       409639  EFI System (FAT)
 2         409640    854536479  Mac OS X HFS+
 3      854536584    916425255  Basic Data
 4      916425256    917694791  Mac OS X HFS+
 5      968960634    976773118  Linux Swap
 6      917694792    968960417  Basic Data

Current MBR partition table:
 # A    Start LBA      End LBA  Type
 1              1       409639  ee  EFI Protective
 2         409640    854536479  af  Mac OS X HFS+
 3 *    854536584    916425255  07  NTFS/HPFS
 4      916425256    917694791  af  Mac OS X HFS+

MBR contents:
 Boot Code: Unknown, but bootable

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+
 Listed in MBR as partition 2, type af  Mac OS X HFS+

Partition at LBA 854536584:
 Boot Code: Windows BOOTMGR (Vista)
 File System: NTFS
 Listed in GPT as partition 3, type Basic Data
 Listed in MBR as partition 3, type 07  NTFS/HPFS, active

Partition at LBA 916425256:
 Boot Code: None
 File System: HFS Extended (HFS+)
 Listed in GPT as partition 4, type Mac OS X HFS+
 Listed in MBR as partition 4, type af  Mac OS X HFS+

Partition at LBA 968960634:
 Boot Code: None
 File System: Unknown
 Listed in GPT as partition 5, type Linux Swap

Partition at LBA 917694792:
 Boot Code: None
 File System: ext4
 Listed in GPT as partition 6, type Basic Data

I also learnt that MBR has a "capacity" of 3+1 (EFI) partitions. The Win/Mac partitions are on the MBR list, but the Mac recovery partition probably blocks the Linux partition?

How can I make the MBR contain the EFI, Mac, Win and Linux NOT the Recovery partition?

Also, doing google searches about this issue, I read a lot about "Grub", though I can't figure out what it is.

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1 Answer 1

up vote 3 down vote accepted

Here's what I've come across on my findings on doing something similar.

GRUB is a bootloader, it mainly accompanies Linux Distributions

In order to install Windows on the same drive you will need to make sure the partition mapping is MBR, as Windows can only be installed on that Partition Layout, this gives you a further problem, as Mac OS X can only be installed on a GUID Partition, Lion (10.7) checks for this upon Installation.

I would install Mac OS X, then BootCamp Windows 7, after this I would Install Linux with the Bootloader Installed on it's own partition.

You can then modify the Windows 7 bootloader to include GRUB detection on your partition so you can have a listing for Linux on your Windows Bootloader using EasyBCD. This will obviously create further work as you will need to boot your Mac then press the bootcamp boot key at the EFI boot screen, then choose Linux in the Windows Bootloader and then Linux in the Grub Bootloader. But this usually keeps everything separate, something I like.

I know you have already installed the other operating systems and are having trouble with Linux, but this is just my way to go around it.

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Ok understood... But is there absolutely no way seeing Linux in rEFIt? –  Martin Herman Jul 28 '11 at 7:01
    
In my EasyBCD, I cant see the Linux partition(s) ;( nor the swap nor linux... what now? –  Martin Herman Jul 28 '11 at 8:02
    
I don't think it's supposed to see any Linux Partitions, you choose the Grub Bootloader Option and it'll find the Grub Bootloader automatically I think, that's how it's happened for me before. –  Sandeep Bansal Jul 28 '11 at 13:53

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