Mac OS 9.2.1 requires one of the following Macintosh computers:
- Power Mac G4 or Macintosh Server G4 (all models)
- Power Macintosh G3 or Macintosh Server G3 (all models)
- iMac (all models)
- iBook (all models)
- PowerBook (all models later than the original PowerBook G3)
Notes
1. Identifying PowerBook computers: All PowerBook computers that work with Mac OS 9.2.1 have a large, white Apple logo on the outside of their display lids.
2. Computers with microprocessor upgrade cards are not supported by Apple with Mac OS 9.2.1. Though Mac OS 9.2.1 may install and appear to function normally on some computers with third-party microprocessor upgrade cards, Apple does not provide technical support or assistance for Mac OS 9.2.1 when used in this way. Contact the manufacturer of your microprocessor upgrade card for support information.
Additionally, the computer should have:
- 320 MB or more of free hard disk space for an easy install. The amount may be greater with a Custom Install. For related information, please see technical document 106082: "Mac OS 9.1, 9.2, and 9.2.1: Hard Disk Space Requirements"
- At least 32 MB of RAM with virtual memory set to 64 MB.
Note: The minimum amount of RAM will let the computer perform only at minimum speeds. Installing additional RAM will increase the system performance. With virtual memory turned off there may be up to a 10 MB difference in RAM usage. This difference is normal and due to code-mapping. For more information, please see technical document 15854: "Virtual Memory: How It Differs On Power Macintosh"
Notes on use with Mac OS X Server
- MacOS.app, a part of Mac OS X Server 1.x, does not work with Mac OS 9.2.1.
- NetBoot images on Mac OS X Server work but require a Mac OS 9 license for each NetBoot client.