Salutations!
So, i got a Macbook pro8,1 and i would very much like to have a dual boot system on it.
I prefer the USB Media installation method, and as it's the only option i have at the moments.
So, i've Follow the Instructions in :
http://www.ubuntu.com/download/help/...ick-on-mac-osx

  • Terminal commands used :

hdiutil convert -format UDRW -o ~/Desktop/ubuntu-12.10-desktop-amd64+mac.img ~/Desktop/ubuntu-12.10-desktop-amd64+mac.iso

sudo dd if=/Users/sary/Desktop/ubuntu-12.10-desktop-amd64+mac.img of=/dev/rdisk2 bs=1m

This is my setup :


  • installed Refind

http://www.rodsbooks.com/refind/getting.html

  • Formatted the usb in " Disk Utility " :

Selected '1 Partition' and 'MacOS Extended (Journaled)' .

  • Partitioned the usb as :

GUID Partition Table (GPT)

  • The ISO img used :

the Ubuntu 12.10 amd64+mac version " ubuntu-12.10-desktop-amd64+mac.img " .
after a shutdown, Refind shows up and it's working properly, But when i select the USB Media drive it leads to a black screen that reads " Non-system disk " .

I would like to know What exactly am i doing wrong, or missing here ?


  • Should the usb format be in " Mac OS Extended (Jounrnaled) " , " MS-DOS (FAT) or " ExFat " ?
  • Should it have 1,2 Partition Layout ?
  • IF it must be formated as Mac OS Extended (Jounrnaled) , does it mean the partition scheme should be set to " GPT " or " MBR " to have an ubuntu bootable usb drive ?

Thanks.