Another good option, although not free, is FWB CD-ROM Toolkit. Versions earlier than 2.0 will work on both System 6 and 68000 processors. I currently have an Apple CD 300e attached to a Classic with this as my driver, although I use it for audio CDs. I've used 300e drives on machines as early as the Plus without any problems.
As for booting up with CDs, most machines made before 1990 cannot do this. There should be a list somewhere online of the Macs that can or cannot boot from a CD. If not, I believe the list is in Charles Rubin's "What do I do Now?" book, which was part of the Macintosh Bible series.
As for booting up with CDs, most machines made before 1990 cannot do this. There should be a list somewhere online of the Macs that can or cannot boot from a CD. If not, I believe the list is in Charles Rubin's "What do I do Now?" book, which was part of the Macintosh Bible series.