You can not boot from PC disks, but you can use them to copy files from PC to Amiga. Mostly I used them to copy LHA files to Amiga.
To make your workbench read PC disks, go to "Sys:Storage/DosDrivers" folder and copy file labeled PC0 to Sys: Devs/DosDrivers, that's it.
Reboot the Amiga and it should work.
When you insert a disk you should see 2 disk icons, one an typical floppy icon and other PC0:
?, when you click on that icon and select format, that disk will be readable on PC.