Configuring the FireDrive for Macintosh OS 8 and 9 Problem: The Mac does not detect the FireDrive. Cause: The Mac OS does not install mass storage device support during the OS install. Solution: This solution only applies to Mac OS 8&9 (There is no current support for OS X). 1) Download the "firewire_extensions.sit" file by clicking here. 2) Unstuff it and transfer the files to your extensions folder. 3) Plug in and turn on the FireDrive. 4) Restart your Macintosh. The FireDrive should come online.