Dual boot macbook with linux

I got a new black macbook which is pretty sexy and hooked it up with ubuntu 7.04 according to the guide provided in help.ubuntu.com, but I realised i have a problem…I can no longer boot my mac !!! It boots ubuntu without any Os selection menu or anything, and when i checked grub…hmm no luck. anyways, what can i do Q

Id appreciate ur help

Sounds like Ubuntu copied over y our boot loader for Mac. I don't really know anything about Macs but I would assume that you need to boot from the disk and then go in to the console of some kind and re-load your boot loader. Thats my best guess.