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Apple Computing Products:
Running Windows on your Mac
Unable to dual-boot Mac OSX an Ubuntu
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<blockquote data-quote="danradu" data-source="post: 1239602" data-attributes="member: 202273"><p>Hi,</p><p></p><p>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.</p><p></p><p>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.</p><p></p><p>This is the partition info from Mac's Partition Inspector :</p><p></p><p></p><p>*** Report for internal hard disk ***</p><p></p><p>Current GPT partition table:</p><p># Start LBA End LBA Type</p><p>1 40 409639 EFI System (FAT)</p><p>2 409640 430097143 Mac OS X HFS+</p><p>3 430097144 608349419 Basic Data</p><p>4 608349420 625137344 Linux Swap</p><p></p><p>Current MBR partition table:</p><p># A Start LBA End LBA Type</p><p>1 1 409639 ee EFI Protective</p><p>2 * 409640 430097143 af Mac OS X HFS+</p><p>3 430097144 608349419 83 Linux</p><p>4 608349420 625137344 82 Linux swap / Solaris</p><p></p><p>MBR contents:</p><p>Boot Code: GRUB</p><p></p><p>Partition at LBA 40:</p><p>Boot Code: None (Non-system disk message)</p><p>File System: FAT32</p><p>Listed in GPT as partition 1, type EFI System (FAT)</p><p></p><p>Partition at LBA 409640:</p><p>Boot Code: None</p><p>File System: HFS Extended (HFS+)</p><p>Listed in GPT as partition 2, type Mac OS X HFS+</p><p>Listed in MBR as partition 2, type af Mac OS X HFS+, active</p><p></p><p>Partition at LBA 430097144:</p><p>Boot Code: GRUB</p><p>File System: ext4</p><p>Listed in GPT as partition 3, type Basic Data</p><p>Listed in MBR as partition 3, type 83 Linux</p><p></p><p>Partition at LBA 608349420:</p><p>Boot Code: None</p><p>File System: Unknown</p><p>Listed in GPT as partition 4, type Linux Swap</p><p>Listed in MBR as partition 4, type 82 Linux swap / Solaris</p><p></p><p></p><p>I tried booting with rEFIt as well as by pressing the 'alt' key during the start up. Same result.</p><p></p><p>Can someone help me understand what is the meaning of : 'MBR contents: Boot Code: GRUB' </p><p></p><p>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 ?</p><p></p><p>Even before installing Ubuntu rEFIt was giving me 2 options : 'Mac OS' and 'Linux HD'.</p><p>After installing Ubuntu (in the newly created /dev/sda3 partition) rEFIt gives me 3 options : 'Mac OS', 'Linux HD' and 'Linux from partition 3' !</p><p></p><p>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.</p><p></p><p>Can't figure out what's going on ... help please.</p></blockquote><p></p>
[QUOTE="danradu, post: 1239602, member: 202273"] 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. [/QUOTE]
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