Hi,
I am trying to create a dual-boot setup on a MacBookPro 5,4 with OS X 10.6.7 and Ubuntu 10.04LTS 64bit.
I installed rEFIt and and used Disk Utility to create a free space after the Mac HFS+ partition. Then in the Ubuntu installer, using GParted I created an ext4 partition for Linux and a Linux-swap partition. I asked the installer to put the boot loader in the Linux partition. Everything run smoothly but when trying to boot the Linux OS I get a black screen with a blinking cursor.
This is the partition info from Mac's Partition Inspector :
*** Report for internal hard disk ***
Current GPT partition table:
# Start LBA End LBA Type
1 40 409639 EFI System (FAT)
2 409640 430097143 Mac OS X HFS+
3 430097144 608349419 Basic Data
4 608349420 625137344 Linux Swap
Current MBR partition table:
# A Start LBA End LBA Type
1 1 409639 ee EFI Protective
2 * 409640 430097143 af Mac OS X HFS+
3 430097144 608349419 83 Linux
4 608349420 625137344 82 Linux swap / Solaris
MBR contents:
Boot Code: GRUB
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+, active
Partition at LBA 430097144:
Boot Code: GRUB
File System: ext4
Listed in GPT as partition 3, type Basic Data
Listed in MBR as partition 3, type 83 Linux
Partition at LBA 608349420:
Boot Code: None
File System: Unknown
Listed in GPT as partition 4, type Linux Swap
Listed in MBR as partition 4, type 82 Linux swap / Solaris
I tried booting with rEFIt as well as by pressing the 'alt' key during the start up. Same result.
Can someone help me understand what is the meaning of : 'MBR contents: Boot Code: GRUB'
I could understand : 'Partition at LBA 430097144: Boot Code: GRUB' - that is the Linux partition where I told the installer to put the boot loader, but what is the other one ?
Even before installing Ubuntu rEFIt was giving me 2 options : 'Mac OS' and 'Linux HD'.
After installing Ubuntu (in the newly created /dev/sda3 partition) rEFIt gives me 3 options : 'Mac OS', 'Linux HD' and 'Linux from partition 3' !
Looks like no matter what, as soon as I install rEFIt i get a bogus 'Linux HD' option and somehow it prevents the real one 'Linux from partition 3' to work.
Can't figure out what's going on ... help please.
I am trying to create a dual-boot setup on a MacBookPro 5,4 with OS X 10.6.7 and Ubuntu 10.04LTS 64bit.
I installed rEFIt and and used Disk Utility to create a free space after the Mac HFS+ partition. Then in the Ubuntu installer, using GParted I created an ext4 partition for Linux and a Linux-swap partition. I asked the installer to put the boot loader in the Linux partition. Everything run smoothly but when trying to boot the Linux OS I get a black screen with a blinking cursor.
This is the partition info from Mac's Partition Inspector :
*** Report for internal hard disk ***
Current GPT partition table:
# Start LBA End LBA Type
1 40 409639 EFI System (FAT)
2 409640 430097143 Mac OS X HFS+
3 430097144 608349419 Basic Data
4 608349420 625137344 Linux Swap
Current MBR partition table:
# A Start LBA End LBA Type
1 1 409639 ee EFI Protective
2 * 409640 430097143 af Mac OS X HFS+
3 430097144 608349419 83 Linux
4 608349420 625137344 82 Linux swap / Solaris
MBR contents:
Boot Code: GRUB
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+, active
Partition at LBA 430097144:
Boot Code: GRUB
File System: ext4
Listed in GPT as partition 3, type Basic Data
Listed in MBR as partition 3, type 83 Linux
Partition at LBA 608349420:
Boot Code: None
File System: Unknown
Listed in GPT as partition 4, type Linux Swap
Listed in MBR as partition 4, type 82 Linux swap / Solaris
I tried booting with rEFIt as well as by pressing the 'alt' key during the start up. Same result.
Can someone help me understand what is the meaning of : 'MBR contents: Boot Code: GRUB'
I could understand : 'Partition at LBA 430097144: Boot Code: GRUB' - that is the Linux partition where I told the installer to put the boot loader, but what is the other one ?
Even before installing Ubuntu rEFIt was giving me 2 options : 'Mac OS' and 'Linux HD'.
After installing Ubuntu (in the newly created /dev/sda3 partition) rEFIt gives me 3 options : 'Mac OS', 'Linux HD' and 'Linux from partition 3' !
Looks like no matter what, as soon as I install rEFIt i get a bogus 'Linux HD' option and somehow it prevents the real one 'Linux from partition 3' to work.
Can't figure out what's going on ... help please.