Talk:Mac OS 7.5.5/@comment-108.35.243.150-20120623195142

System 7.5.5 did not "require System 7.5.3". There were two ways System 7.5.5 was shipped, one was on a bootable Apple CD-ROM named "Apple Macintosh CD" (which used to cost $$ in 1996) for a fresh install, the other was as a downloadable update for System 7.5.3.