The Amiga formats the disk as an Amiga volume with the chosen file system ie. FFS. One formatted on the pc will have a pc file system ie. fat95. You can not read Amiga file systems on a pc. You can read and write pc disks on the Amiga with a program called CrossDOS. You still can not run a program (would require some type of emulator), but you can share files this way via sneaker net.
Stew
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