Mac OS 8.1
| Build of Mac OS 8 | |
 | |
| Architecture | 68k, PPC |
|---|---|
| Compiled | 1997-12-16 |
| About |  |
Mac OS 8.1 is a version of Mac OS 8 released on 19 January 1998, which is the last version of Mac OS to run on 68k processors. This version is also the default operating system for the "Blue Box" emulation layer in the PPC versions of both Apple Rhapsody Developer Releases 1 and 2. This is also the first version to be compatible with the iMac G3. This version of Mac OS introduces support for HFS+, and also includes Internet Explorer for Mac, discontinuing the previous web browser Netscape.