so i lost my sister's ibook install dvds, so i got a friend to send me a seeding key from apple's developer connection, so i can download tiger. the issue is, it is a dvd dmg, and i have no dvd burner. is there any way to boot off a mounted disk image? i have an imac G5, the ibook, another ibook, and a quicksilver powermac G4 to use. thanks!