Following package need to be installed.
- /usr/ports/sysutils/fusefs-ntfs - ntfs-3g - which is installed as part of fusefs-ntfs.
Edit /etc/rc.conf and add following line.
Now start fuse before mounting NTFS
Before mounting make sure following directory exists.
Now mount drive to that folder
ntfs-3g /dev/da0s1 /mnt/cldrv
Congratulation !! you just did it
If you need more detail follow linux config