Mac OS 9 is an operating system that was designed and developed by Apple in 1999 alongside Apple’s personal computers. The system has been released on October 23, 1999, and was available for $99 or was preinstalled on currently sold computers.
Mac OS 9 was featuring more than 50 new features and 9 internet power tools. This release was focused mainly on Sherlock improvements but included a series of bug fixes and new features such as protected memory, pre-emptive multitasking, multiple users support, a new Energy Saver Control Panel, hibernate function, and many more.
On January 9, 2001, this Mac OS has been replaced by a newer version of Mac OS 9.1.
Today Mac OS 9 is 23 years old!
Mac OS 9 General Information
| Released | October 23, 1999 |
| Original Price | $99 |
| System Requirements | PowerPC processor 32 MB RAM 250 MB of hard disk space |
| Distribution | CD-ROM |
| Order Number | M7401LL/A M7401LL/B |
Versions
| Version | Release Date |
| Mac OS 9.0 | October 23, 1999 |
| Mac OS 9.0.1 | Unreleased |
| Mac OS 9.0.2 | February 16, 2000 |
| Mac OS 9.0.3 | March 24, 2000 |
| Mac OS 9.0.4 | April 4, 2000 |
