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Thread: Help, Installed ubuntu 12.04 now cant access Mac OS Lion

  1. #1
    Join Date
    May 2012
    Beans
    2

    Help, Installed ubuntu 12.04 now cant access Mac OS Lion

    Hi everyone,

    long story short, I installed Ubuntu 12.04 today on my Mac Book Pro, previously it has been dual booting Mac OSX and Windows 7 via the bootcamp. Since I have installed ubuntu i can no longer access the other two OS'. Specifically when I select Mac from the Grub2 menu, the screen just goes black and nothing happens. If i select windows7 from the menu it says invalid OS.

    I only have one harddrive that is partitioned amongst the OS'. Gparted shows
    /dev/sda1, Fat 32, /mnt/boot-sav/sda1, EFI, flag boot
    /dev/sda2, hfs+, /mnt/boot-sav/sda2, Macintosh HD, flag boot
    /dev/sda3, hfs+, /mnt/boot-sav/sda3, Recovery HD
    /dev/sda4, ntfs, /mnt/boot-sav/sda4, Bootcamp
    /dev/sda8, ext4, /
    /dev/sda6, ext4, /mnt/boot-sav/sda6, Ubuntu

    Additionally i know all the files for the other OS' are still there as i can see them in file manager. Also i cannot boot from CD, it flashes the traditionally white mac screen on start up for approx 1 second before going to the grub 2 bootloader.


    any help would be much appreciated

    thanks heaps
    Last edited by Aleator; May 26th, 2012 at 11:41 AM. Reason: further information

  2. #2
    Join Date
    Nov 2004
    Location
    Maine
    Beans
    1,695
    Distro
    Ubuntu 15.04 Vivid Vervet

    Re: Help, Installed ubuntu 12.04 now cant access Mac OS Lion

    haven't do this my self but this article may be of help.
    http://lifehacker.com/5531037/how-to...-camp-required
    Wireless script
    Dave
    Registered Linux User #462608
    Ubuntu 15.04 /14.04

  3. #3
    Join Date
    May 2012
    Beans
    2

    Re: Help, Installed ubuntu 12.04 now cant access Mac OS Lion

    thanks for the help but the issue is that I have already installed the three os', so I cant go back and install rEFIt. I also cant access mac whatsoever to install it.



    I probably should have looked at the tutorials before installing, just assumed it would be the same process as on a pc.

  4. #4
    Join Date
    Nov 2004
    Location
    Maine
    Beans
    1,695
    Distro
    Ubuntu 15.04 Vivid Vervet

    Re: Help, Installed ubuntu 12.04 now cant access Mac OS Lion

    Ok , did you get any kind of restore disk with the Mac pro book?

    if you did try and restore the boot loader for Mac and the go from there.
    Wireless script
    Dave
    Registered Linux User #462608
    Ubuntu 15.04 /14.04

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