Dual boot OS X Yosemite and Ubuntu 14.04.1 LTS

Discussion in 'Windows, Linux & Others on the Mac' started by jimmy1984, Jan 1, 2015.

  1. jimmy1984 macrumors member


    Apr 10, 2010
    I have a late 2009 iMac, and I am currently running OS X Yosemite. I am new to Linux, and I would like to install Ubuntu 14.04.1 LTS on my iMac and dual boot. I'm having some issues:

    I've been able to successfully install rEFInd, and when I reboot -- I'm able to select OS X, shutdown, restart, etc. With the DVD in the drive, I am not given an option to boot from that drive. After restarting, I forced it to load from the CD/DVD drive and was given the option of running the LiveCD or installing Ubuntu. The installation process says that no other OS is recognized and gives me options to erase everything and install Ubuntu, some others, and lastly "something else."

    I went into disk utility and partitioned my HardDrive from 500GB to 400GB (with 100GB free space).

    Any ideas?
  2. jimmy1984 thread starter macrumors member


    Apr 10, 2010
  3. AppleCider007 macrumors newbie


    Jan 5, 2015
    Well I wanted to do the same thing and run 2 operating systems, but have choice at the boot up, well I was told I cou do it but couldn't quite figure it out without it asking me to delete the current operating system, so I was also told to download Virtual Box and I can run both operating systems at the same time and switch anytime. I read all the instructions and watched a video on YouTube and it's pretty simple to do. So U hope this info will help you with what your trying to do.
  4. poiihy macrumors 68020


    Aug 22, 2014
    Choose Something Else, and select the "Free Space" that you created in Disk Utility. (if you don't have any then make some in disk utility). Click Add... to create a partition. Set the mount point as "/" so it will install there. Make the partition almost as big as the free space, but leave some for some swap space and more free space if you want. After you make the partition, select the leftover free space and click Add... again. Now create a Swap partiton, 2 GB is fine. Set the format to Swap Space.
    That's it and now you can install.

    The installer would install a bootloader so after you install, hold Option to get into OS X and then reinstall rEFInd.
  5. z31fanatic macrumors 6502a


    Mar 7, 2015
    Mukilteo, WA USA
    Just today I installed Linux Mint 17.1( Ubuntu based OS) alongside Yosemite.
    At first I ran into the same problem as you. The Linux installer would not recognize OSX.
    To fix it, I did what Poiihy said. I created a 40GB partition as free space in OSX and then rebooted in Mint and chose the something else option.
    I created two partitions from the 40GB free space. 4GB as a Swap Area and the other 36GB as "/". I chose to install Linux on the 36GB partition. Everything went well.


    I didn't have to do that after the Mint install. The Linux bootloader didn't overwrite rEFInd.

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