Mac OS 9.1 is an operating system that was designed and developed by Apple in 2001 alongside Apple’s personal computers. The system has been released on 9 January 2001, and was available for $99 or was preinstalled on currently sold computers. On 18 June 2001, this OS has been replaced by a newer version of Mac OS 9.2.

1. List Of Mac Os Releases

• Mac OS X & macOS names. As you can see from the list above, with the exception of the first OS X beta, all versions of the Mac operating system from 2001 to 2012 were all named after big cats.
• The Mac OS X is based on UNIX. I am interested in the old school OS, Mac OS 9, what is this based on? Can it run the UNIX application? What is the file system in Mac OS 9? Mac classic-mac-os. Improve this question. Follow edited Oct 24 '11 at 10:48.

Mac OS 9.1 was the last major release of Apple’s classic Mac OS. Generally, the Ninth version of the Macintosh operating system contains many improvements including Software Update engine, Support for multiple users, Open Transport Networking, iTools, Sherlock 2, or full multitasking. Mac OS 9 has been discontinued in 2001 however, all functions have been moved to Mac OS X. Mac OS 9.1 includes an integrated CD burning support in the Macintosh Finder and added a new Window menu in the Finder for switching between open windows.

Today Mac OS 9.1 is 20 years old!

Nine major versions of the classic Mac OS were released. The name 'Classic' that now signifies the system as a whole is a reference to a compatibility layer that helped ease the transition to Mac OS X. Macintosh System Software – 'System 1', released in 1984; System Software 2, 3, and 4 – released between 1985 and 1987; System Software 5 – released in 1987.

Mac OS 9.1 – General information

Overview

List Of Mac Os Releases