Apple has published documents detailing a series of support issues affecting G5 Power Macs, chiefly confirming that no version of Mac OS X Server is presently supported on the machines. The company warns: "The Power Mac G5 computer is not supported for use with any version of Mac OS X Server 10.2, or any earlier version of Mac OS X Server. Mac OS X Server 10.3 will be supported on Power Mac G5 computers."
Apple explains: "Power Mac G5 computers require Mac OS X 10.2.7 (G5), which is made specifically for this computer. Mac OS X 10.2.7 (G5) cannot be installed on other computers, and other versions of Mac OS X 10.2 (both server and client) cannot be installed on the Power Mac G5 computer."
Additional affected features
Apple has confirmed some other issues, too: The new G5 Macs lack support for third-party Parallel-to-Serial ATA adaptors, meaning that a Parallel ATA hard drive attached to a Power Mac G5 via an adapter will not work. Apple recommends that G5 owners who want to upgrade or add extra drives use only native Serial ATA drives.
News source: Macworld UK