Hey everyone -

I am having trouble creating a bootable installation USB flash drive on Mac, for installing Ubuntu.

My DVD-CD drive is dead, so I cannot use a disk. I do not have an external CD drive. There are instructions on the ubuntu website for creating a usb drive that should be bootable.

I follow them to the letter, and the flash drive is recognized after startup, but does not boot when I hold down the ALT key.

Disk Utility reports in the "Information" dialog for the drive that the partition is not bootable. (Bootable: no)

Does anyone know how to create a USB flash drive that will boot, using only OS X?