I have several working that I still use with vintage computers. Retro Macs can boot from the scsi version and it's way faster then the PC parallel port version <3
That was how me and my friends would get around the Foolproof software on the macs in high school.
Put a bootable os 9 system folder on a zip drive, boot from it, open the Foolproof control panel in resedit, delete all the resources, reboot into regular os 9, open quake3arena, profit.