Mount CDROM to Pfsense

1. Go to a shell.
2. Make a directory to mount the CD at:
   mkdir /tmp/cdrom
3. Mount the CD:
   mount_cd9660 /dev/acd0 /tmp/cdrom or mount_cd9660 /dev/cd0 /tmp/cdrom
4. CD is now mounted at /tmp/cdrom. When finished unmount:
   umount /tmp/cdrom

* Note: If your cdrom device is not acd0, check the bootup messages for the proper device.