MacOS 9.0.4 - Apple Notes at Sound On Sound (2000-06, archived ).

Technical Note TN1994: Mac OS 9.0.4 at Apple Developer Connection (, archived ).

Mac OS 9.0.4 is also the latest Mac OS that can run on the cross-platform PowerMacintosh emulator SheepShaver, due to SheepShaver's lack of MMU emulation. Feature-wise, it is the same as Mac OS 9.0. PCE. If you still dont see anything, you may have to refresh the page. Please be patient as you may see up to 30s of black screen upon booting, but its worth it. It also included a new audio extension, Sound Manager and CD/DVD driver and fixed the Y2K20 problem in the Date & Time control panel. This is a demo of PCEs classic Macintosh emulation, running System 6.0.8 with a bunch of games. It also included USB 1.4.2 in the Mac OS ROM file and fixed a sound issue experienced waking from 'sleep' mode.

It included FireWire 2.3.3 which fixed problems with certain DV camcorders and FireWire hard disks, and Open Transport 2.6.1 which fixed a bug that could be exploited by certain Denial of Service attacks.

This update was a roll-up of the custom fixes for specific hardware that were released in 9.0.2 and 9.0.3, plus other fixes to 9.0.

Mac OS 9.0.4, released on April 4, 2000, is the final Macintosh OS to support 'Old World' Macs with no Memory Management Unit (MMU).

Mac os 9.0.2 emulator