You can't upgrade any PowerMac past Mac OS X 10.5.8. That means Mac OS X 10.6 Snow Leopard, 10.7 Lion, and 10.8 Mountain Lion will not work with any PowerMac.

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The PowerBook G4 is a series of notebook computers manufactured, marketed, and sold by Apple Computer, Inc. Between 2001 and 2006 as part of its PowerBook line of notebooks. The PowerBook G4 runs on the RISC-based PowerPC G4 processor, designed by the AIM (Apple/IBM/Motorola) development alliance and initially produced by Motorola.It was built later by Freescale, after Motorola spun off its. Quite a few people still have Power Mac G5s kicking around, and quite a few people have iMac G3s around as well. That's our guess of what still has the most ground in the PowerPC World. The PPC Archive team ourselves has a variety of machines, ranging from iMac G3s, Blue and Whites, iBooks, PowerBooks, and G5 systems! The PowerPC and Intel Macs are totally different architectures, so you are correct, you could only really emulate a PowerPC install on an intel machine, versus virtualize Windows/Mac OS/Linux on a intel machine. There are some PowerPC emulators, but the one I know of for OS X would be PearPC. I have used PearPC a very long time ago, and don't. That means Mac OS X 10.6 Snow Leopard, 10.7 Lion, and 10.8 Mountain Lion will not work with any PowerMac. PowerMacs with PowerPC 601 to 604 processors can all be upgraded to Mac OS 9.1, except certain Performa/Powermac 54xx/55xx/63xx/64xx machines which were limited to Mac OS 7.5.5 where X can be any number. PowerMac G3s with a Beige case could.

Free download hp laserjet 1022 driver. PowerMacs with PowerPC 601 to 604 processors can all be upgraded to Mac OS 9.1, except certain Performa/Powermac 54xx/55xx/63xx/64xx machines which were limited to Mac OS 7.5.5 where X can be any number.

PowerMac G3s with a Beige case could be upgraded to Mac OS X 10.2.8. Some may require a firmware to be installed before upgrading past 10.1.5 to 10.2 or later. A third party XPostFacto software expanded some of these machine's upgrade options.

PowerMac G3s with a Blue and White case, and PowerMac G4 PCI could be upgraded to Mac OS X 10.4.11, however, could not boot externally via Firewire, nor USB any version of Mac OS X. An internal drive solution is needed to boot the installer disc of any Mac OS X. Some may require a firmware to be installed before upgrading past 10.1.5 to 10.2 or later.

Powermac G4 with up to dual 800 Mhz processor were limited by Apple to Mac OS X 10.4.11, though third party software known as LeopardAssist could force Mac OS X 10.5 to 10.5.8 to be able to be used on some of those Macs. Note with Mac OS X 10.5, Classic is gone. If your PowerMac supported booting into Mac OS 9, it would continue to be able to do so after upgrading to 10.5 as long as the Mac OS 9 drivers were left installed.

Powermac G4 with 867 Mhz, 1 Ghz and higher, and G5 machines could all be updated to 10.5.8. The PowerMac G5 is not to be confused with the Mac Pro, the user tip on upgrading to Snow Leopard explains how to tell them apart.

Mac Os X For Powerpc G4 Os

This user tip explains additional upgrade options.