System Requirements: 68040 or PowerPC processor, 12 MB of real RAM (and virtual memory up to 20 MB if you have less than 20 MB real RAM), and 195 MB of hard disk space
Distribution Media: CD-ROM
Apple Order Number: n/a
Versions: 8.1
History: Released January 19, 1998, Mac OS 8.1 was the last version to run on both m68k- and PowerPC-based Macintoshes. It introduced the new, optional HFS Plus file system format (also known as the Mac OS Extended Format), which supported large file sizes, longer file names and made more efficient use of the space on larger drives due to using a smaller block size. To upgrade, you had to wipe out the contents of your entire hard drive before upgrading to HFS Plus, although some third-party utilities later appeared that held your data steady while upgrading silently to HFS Plus. Mac OS 8.1 also included an enhanced version of PC Exchange, allowing Macintosh users to see the long file names (up to 255 characters) on files that had been created on PCs running Windows 95. It is the earliest version that can run Carbon apps.
History Source: Wikipedia
History Source Address: http://en.wikipedia.org/wiki/Mac_OS_8
