Mac System Software 6.0.6

Mac System Software 6.0.6 is a version of Mac System Software 6.x which was released in September 1990. This is the first version of Mac System Software 6 to support Macintosh LC, Macintosh Classic and Macintosh IIsi. The Apple icon in the top-left corner has been changed until Mac OS 8. The background color was also changed.