The pangolin has struck again. The bug of the day for today is Ubuntu taking away my permissions on my Data partition (NTFS). One moment everything worked fine, the next moment I couldn't chmod anything anymore. chown throws no errors or warnings at all, but nothing has changed either. chmod keeps saying Operation not permitted.

I've been messing around with /etc/fstab as suggested by other answers on AskUbuntu, but none of them seem to have the desired effect.

This is my current line:

UUID=25D7D681409A96B7 /media/Data     ntfs    defaults,umask=000,gid=46,permissions,users,auto,exec 0       0

For reference, this is the original one:

UUID=25D7D681409A96B7 /media/Data     ntfs    defaults,umask=007,gid=46 0       0

(right after the problem started occuring)

What do I need to do so I am the owner of my own hard drive again? I want to be able to just use chmod and chown (without sudo) without being told that some mysterious alien has taken over control of my Data partition.

I can still read and write, but execution permissions seem to be the problem.