Are you trying to boot a OS disk or just a regular disk in general keeping it from booting? If you're trying to boot an OS disk you need to use a 10.2-10.5, 10.5 is the best as it provides the most usability and it runs well on a G5.
Also, to boot from a disk you need to hold down the C key, and if that doesn't work try holding down the option key to bring up the "Boot menu". -- You received this message because you are a member of the iMac Group, a group for those using Apple iMacs and eMacs. The list FAQ is at http://lowendmac.com/imac/list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to imaclist@googlegroups.com To leave this group, send email to imaclist+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/imaclist