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Thread: MacBookAir4,1 & MacBookAir4,2 (MBA 2011) support

  1. #891
    Join Date
    Apr 2007
    Location
    Texas
    Beans
    108

    Re: MacBookAir4,1 & MacBookAir4,2 (MBA 2011) support

    Quote Originally Posted by poliva View Post
    @diafygi: looks like your hibrid MBR is broken and needs to be rebuild (as per dfacto instructions, as you posted). If that's not the problem, make sure you have installed grub in the 4th MBR partition (linux /dev/sda4) and not in the disk (/dev/sda).
    Hey poliva, thanks for the reply. I did follow dfacto's instructions, which is why the MBR table lines up with the partition table below. When I try to sync the MBR in the refit menu, it say's it's not touching anything and displays the same tables as below.

    How can I see if grub is installed on the /dev/sda4 partition?

    Also, I'm still curious as to why there are two Linux icons on the refit menu when I boot? Does it thing that the Recovery partition is a Linux partition?

    Code:
    Recovery/transformation command (? for help): o
    
    Disk size is 236978176 sectors (113.0 GiB)
    MBR disk identifier: 0x00007997
    MBR partitions:
    
    Number  Boot  Start Sector   End Sector   Status      Code
       1                     1       409639   primary     0xEE
       2                409640     78534639   primary     0xAF
       3              78534640     79804175   primary     0xAF
       4      *       80214016    233842687   primary     0x83
    
    Recovery/transformation command (? for help): p
    Disk /dev/disk0: 236978176 sectors, 113.0 GiB
    Logical sector size: 512 bytes
    Disk identifier (GUID): 00003BCB-6883-0000-5258-000031770000
    Partition table holds up to 128 entries
    First usable sector is 34, last usable sector is 236978142
    Partitions will be aligned on 8-sector boundaries
    Total free space is 411861 sectors (201.1 MiB)
    
    Number  Start (sector)    End (sector)  Size       Code  Name
       1          409640        78534639   37.3 GiB    AF00  Customer
       2        78534640        79804175   619.9 MiB   AF00  Recovery HD
       3        79804176        80213775   200.0 MiB   EF00  EFI System Partition
       4        80214016       233842687   73.3 GiB    0700  
       5       233842688       236976127   1.5 GiB     8200

  2. #892
    Join Date
    May 2008
    Beans
    76

    Re: MacBookAir4,1 & MacBookAir4,2 (MBA 2011) support

    Quote Originally Posted by diafygi View Post
    How can I see if grub is installed on the /dev/sda4 partition?
    $ sudo strings /dev/sda |head -n 30 |grep -i grub
    $ sudo strings /dev/sda4 |head -n 30 |grep -i grub

    The place where grub is installed, should output something like "grub/stage... whatever"

    Quote Originally Posted by diafygi View Post
    Also, I'm still curious as to why there are two Linux icons on the refit menu when I boot? Does it thing that the Recovery partition is a Linux partition?
    no idea, maybe because it sees two ext partitions? but according to the table you pasted it should only see one. If having problems, you can use refind instead of refit.

  3. #893
    Join Date
    Apr 2007
    Location
    Texas
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    108

    Re: MacBookAir4,1 & MacBookAir4,2 (MBA 2011) support

    Quote Originally Posted by poliva View Post
    $ sudo strings /dev/sda |head -n 30 |grep -i grub
    $ sudo strings /dev/sda4 |head -n 30 |grep -i grub
    Hey poliva, I booted into the Ubuntu live USB and ran the command for all of the sda* shown: both sda and sda1 returned "GRUB" output. There is also a grub folder in /boot/ for that partition (i.e. /boot/grub/). Does that mean anything to you?

    Code:
    $ sudo strings /dev/sda |head -n 30 |grep -i grub
    GRUB
    $ sudo strings /dev/sda1 |head -n 30 |grep -i grub
    $ sudo strings /dev/sda2 |head -n 30 |grep -i grub
    $ sudo strings /dev/sda3 |head -n 30 |grep -i grub
    $ sudo strings /dev/sda4 |head -n 30 |grep -i grub
    GRUB
    $ sudo strings /dev/sda5 |head -n 30 |grep -i grub
    Quote Originally Posted by poliva View Post
    no idea, maybe because it sees two ext partitions? but according to the table you pasted it should only see one. If having problems, you can use refind instead of refit.
    Ok, I removed rEFIt and installed rEFInd, following the instructions to manually install it using Mac OS X and installing it to the /Volumes/esp/ partition (disk0s3 for me).

    Now when I reboot, rEFInd is showing only the Mac icon and no other icons. The MBR is exactly the same as before. What can I do for next steps to troubleshoot this?

    Code:
    Recovery/transformation command (? for help): o
    
    Disk size is 236978176 sectors (113.0 GiB)
    MBR disk identifier: 0x00007997
    MBR partitions:
    
    Number  Boot  Start Sector   End Sector   Status      Code
       1                     1       409639   primary     0xEE
       2                409640     78534639   primary     0xAF
       3              78534640     79804175   primary     0xAF
       4      *       80214016    233842687   primary     0x83
    
    Recovery/transformation command (? for help): p
    Disk /dev/disk0: 236978176 sectors, 113.0 GiB
    Logical sector size: 512 bytes
    Disk identifier (GUID): 00003BCB-6883-0000-5258-000031770000
    Partition table holds up to 128 entries
    First usable sector is 34, last usable sector is 236978142
    Partitions will be aligned on 8-sector boundaries
    Total free space is 411861 sectors (201.1 MiB)
    
    Number  Start (sector)    End (sector)  Size       Code  Name
       1          409640        78534639   37.3 GiB    AF00  Customer
       2        78534640        79804175   619.9 MiB   AF00  Recovery HD
       3        79804176        80213775   200.0 MiB   EF00  EFI System Partition
       4        80214016       233842687   73.3 GiB    0700  
       5       233842688       236976127   1.5 GiB     8200

  4. #894
    Join Date
    May 2008
    Beans
    76

    Re: MacBookAir4,1 & MacBookAir4,2 (MBA 2011) support

    Looks like you have grub on the drive (no partition), and also on sda4. Try installing a MBR that will chain to grub on partition 4:

    $ sudo apt-get install mbr
    $ sudo install-mbr -p 4 /dev/sda

  5. #895
    Join Date
    Apr 2007
    Location
    Texas
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    108

    Re: MacBookAir4,1 & MacBookAir4,2 (MBA 2011) support

    Quote Originally Posted by poliva View Post
    Looks like you have grub on the drive (no partition), and also on sda4. Try installing a MBR that will chain to grub on partition 4:

    $ sudo apt-get install mbr
    $ sudo install-mbr -p 4 /dev/sda
    Hey poliva, thanks for the commands. I ran those using the Ubuntu live USB, and the "sudo strings /dev/sda |head -n 30 |grep -i grub" no longer shows GRUB. Thanks!

    However, I'm still only seeing the Mac icon in my rEFInd menu when I boot up. What would my next steps be to troubleshoot why the linux partition isn't showing up in the rEFInd menu?

  6. #896
    Join Date
    May 2012
    Beans
    1

    Re: MacBookAir4,1 & MacBookAir4,2 (MBA 2011) support

    Has anybody been able to get the Thunderbolt to Gigabit Ethernet Adapter to work on Ubuntu 12.04? I have a Macbook Air 4.2.

  7. #897
    Join Date
    Jul 2012
    Beans
    1

    Re: MacBookAir4,1 & MacBookAir4,2 (MBA 2011) support

    I'm trying to install Ubuntu 11.10 on my MBA (i need exactly this version, the software i'm going to work on for my diploma thesis doesn't work with a newer version of Ubuntu), but i can't get it to boot from a live USB drive.

    I created a bootable USB drive using the app from penguintosh.com. It enables me to select the USB drive as my startup partition when restarting the Mac. With 12.04 everything seems to work fine. With 11.10, after a terminal screen telling me "booting Linux kernel, this may take a while" all i get is a black screen.

    The installation guide says "When booting from the USB stick, it is necessary to edit the boot parameters to achieve a usable graphical login: press F6 at the initial menu and add 'nomodeset' before the final '--'. If you're comfortable with the command line, this step isn't necessary - simply press ctrl-alt-F1 to gain a login prompt."

    I don't even know what initial menu is meant - the screen goes black before any menu appears.

  8. #898
    Join Date
    Dec 2004
    Beans
    297

    Re: MacBookAir4,1 & MacBookAir4,2 (MBA 2011) support

    Quote Originally Posted by cargath View Post
    I'm trying to install Ubuntu 11.10 on my MBA (i need exactly this version, the software i'm going to work on for my diploma thesis doesn't work with a newer version of Ubuntu), but i can't get it to boot from a live USB drive.

    I created a bootable USB drive using the app from penguintosh.com. It enables me to select the USB drive as my startup partition when restarting the Mac. With 12.04 everything seems to work fine. With 11.10, after a terminal screen telling me "booting Linux kernel, this may take a while" all i get is a black screen.

    The installation guide says "When booting from the USB stick, it is necessary to edit the boot parameters to achieve a usable graphical login: press F6 at the initial menu and add 'nomodeset' before the final '--'. If you're comfortable with the command line, this step isn't necessary - simply press ctrl-alt-F1 to gain a login prompt."

    I don't even know what initial menu is meant - the screen goes black before any menu appears.
    If you're seeing "booting Linux Kernel", you've gone too far. You need to stop things when you first see any sign of life (from memory, I think that a keyboard icon comes first) by pressing any key and then using one of the menu options to edit the boot command.

    Alternatively, wait until you see the black screen and your USB stick has stopped flashing, and press ctrl-alt-f1 to log in using the command line.

  9. #899
    Join Date
    Jan 2008
    Location
    France
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    Hidden!
    Distro
    Ubuntu Development Release

    Question Re: MacBookAir4,1 & MacBookAir4,2 (MBA 2011) support

    Hello
    Has anyone managed to boot MacOS from GRUB? if yes, how?

  10. #900
    Join Date
    Jun 2005
    Beans
    32

    Re: MacBookAir4,1 & MacBookAir4,2 (MBA 2011) support

    Quote Originally Posted by audiohobbyist View Post
    Has anybody been able to get the Thunderbolt to Gigabit Ethernet Adapter to work on Ubuntu 12.04? I have a Macbook Air 4.2.
    If you need Ethernet, you might have better results with a USB adapter:

    http://pcfolkcom.wordpress.com/2012/...x-workstation/

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