Hi, I have the two hard disks. On the 1st hard disk (SATA) I have installed the Ubuntu & the Windows Xp. So currently booting from the Ubuntu via Grub boot loader, which shows the Windows Xp in the list, so I am able to boot into Ubutnu or Windows. On the 2nd Hard disk (PATA), I have installed the Mac OS X Leopard on the second partition. So how to boot to OS X (on 2nd hard disk) from the Grub loader (on 1st hard disk) ?