SOLVED Problems unmounting a drive

[NASbox]

I imported an NTFS drive, and it seemed to import OK, but for some reason (maybe disk errors as the drive was not in good shape, or possibly something I did in the shell), the drive does not appear to have been unmounted.
The NTFS drive is still displayed on the GUI:

and I don't see any way to unmount from the GUI. I don't know if I missed something. The results of the mount command:

show the drive is still mounted.

Will I mess anything up if I just execute a simple umount command like this:

Code:

umount /var/run/importcopy/tmpdir/dev/ada4s3

from the shell?

 

[sretalla]

Will I mess anything up if I just execute a simple umount command like this:
Code:
umount /var/run/importcopy/tmpdir/dev/ada4s3

from the shell?

Should be OK

The system isn't relying on any NTFS disks for any of the services.

 

[NASbox]

@sretalla thanks for the reply. I ran the umount, and it seemed to work OK. The drive disappeared after I physically removed the drive from the system.