System Software Version 6.0.8L was Apple's last version of System 6.
Unlike previous versions, it was not compatible with all Mac models.
When 6.0.8L was published, System 7 was already out. But its localized
international versions were not finished, so Apple decided to sell the
above models with 6.0.8L for the time being.
Download comes with two 1.4 MB floppy disk images. Use Disk Copy to
create a floppy and boot your Classic, LC or PowerBook using it to
install System 6.
Compatibility
Architecture: 68k
System 6.0.8 requires a Macintosh Classic I & II, Mac LC & LC II and
the PowerBook 100.