Apple File Exchange

Apple File Exchange is a utility developed by Apple Computer that could be found on the Tidbits or Install 2 floppy disks included with System 4.0 through 7.1. It was replaced by PC Exchange, released with System 7 Pro (7.1.1) on October 4, 1993.

Usage
Apple File Exchange could read floppy disks from Macs, as well as disks from DOS/Windows and ProDOS (Apple II) systems.

This utility enabled Macs to read PC disks -- but not without a trick: the floppy disk must have been inserted after Apple File Exchange was open. If this was not the case, the Mac would complain that the disk inserted "was not a Macintosh disk" and would request initialization.

Issues

 * A high-density floppy disk formatted as a 720K DOS disk will not function correctly; the Mac will always assume that any high-density disk has been formatted as an HD disk. To solve this problem, cover the square hole opposite the write-protect tab and re-insert the disk. (This square hole identifies the disk as a high-density disk.)