I have an Apple IIc Plus with a 5.25-inch drive. Do I need a file called
Start 13 on my system for the drive to work properly?
The file Start 13 was used early on when the Apple II went to a 16-sector
disk format. Start 13 made it possible for older, 13-sector diskettes to
be read. You don't need it for the Apple IIc to work with current
diskettes.