I was messing around with ubuntu linux, and after a lot of stupid things I ended up with 20gigs of free space that OSx can't see. So I used the disk utility to make a partition with those 20 gigs of free space, but it gives me a warning saying is going to erase the other partitons too! , the OS X one, where the system is, and the ubuntu.
It's possible to make a partition with out formatting the others in OSX? or any other way?.
Pardon my English, I'am from Quito, Ecuador.
Thank you for your help