The following is in my amd.map: iso9660 type:=auto;fs:=${map};pref:=${key}/ iso9660/acd0 type:=program;fs:=/mnt/amd/iso9660/acd0;\ mount:="/sbin/mount mount /mnt/amd/iso9660/acd0";\ unmount:="/sbin/umount umount /mnt/amd/iso9660/acd0" When no CD is inserted the following happens: Apr 6 14:17:10 mobileKamikaze amd[29972]/info: creating mountpoint directory '/mnt/amd/iso9660/acd0' mount_cd9660: /dev/acd0: Input/output error Apr 6 14:17:10 mobileKamikaze amd[29972]/info: "mount /mnt/amd/iso9660/acd0" mounted fstype program on /mnt/amd/iso9660/acd0 Apr 6 14:17:10 mobileKamikaze amd[29972]/info: /var/run/automounter.amd.mnt/iso9660/acd0 set to timeout in 3 seconds umount: /mnt/amd/iso9660/acd0: not a file system root directory umount: /mnt/amd/iso9660/acd0: not a file system root directory umount: /mnt/amd/iso9660/acd0: not a file system root directory umount: /mnt/amd/iso9660/acd0: not a file system root directory ... Even though there was no successful mount amd tries to unmount it until it's terminated. When entering a CD into the drive I can only mount it after restarting amd. It has come to my attention that mount returns 0 even on unsuccessful mount attempts, maybe that's the cause. I'm runing RELENG_7 on amd64.