I have a macbook pro retina and I have apple, refit, windows 7 and ubuntu 12.10 installed.
When I first installed Ubuntu I got the error missing operating system. But windows 7 and mac was booting/working fine.
So I made a partition for the boot loader (instead of using the partition I use for ubuntu), and when I told refit to boot Linux, it would just freeze on the boot icon. But windows 7 and mac booted/worked fine.
Then when I chose Linux it would boot windows 7 instead. That has stopped, and now Linux AND windows 7 gets stuck on the boot icon!
What is happening?! This is my first time with ubuntu and refit, so I could really use some help. Thanks