newb: mac osx time machine and ubuntu server

[ccslaxer44]

I installed Ubuntu server on an unused desktop with the intent of using it to back up to with time machine on my mac, the only problem is that when i try to back up to the disk, it says i don't have the right privileges, any help would be appreciated

[scaredpoet]

By default, Time Machine only works with HFS+ formatted drives, or on networked drives on machines running OS X.

There are ways to hack it up a bit though (http://www.pherg.net/2007/11/29/mac-os-105-time-machine-with-linux-server/), and do what you want.