linux - I can not edit drive properies even when I use root

I use the gksu nemo (because my file explorer is nemo) command, yet when I go to the drive I use, I right-click, then go to properties I still cannot change the Permissions.

I have a 1TB portable hard drive, I partitioned it as 3 drives, one is like 100GB and it is ext4 for the OS, and the other is like 770 something GB and NTFS partition and I use that as main storage so I can access it on a Windows if I need to. The third is for Ubuntu and is only 100GB but I don't need to be able to write off that. I can write to it just fine, but Steam says I need to mount it with executable permissions so even though it says I do, I can't use Steam with it. I seem to not be able to execute files in general from it. I have to copy the files to the main OS partition in order to run them.

Am I doing something wrong?

/dev/sdc1 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
gvfsd-fuse on /run/user/donnie/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,user=donnie)
/dev/sdc4 on /media/donnie/Ubuntu Linux type ext4 (rw,nosuid,nodev,uhelper=udisks2)
/dev/sdc2 on /media/donnie/Donnie's Drive type fuseblk (rw,nosuid,nodev,allow_other,default_permissions,blksize=4096)

Donnie's Drive is the one I am trying to be able to mount and use steam.

The Ubuntu drive is just an empty 100GB partition on the drive I am going to use to install Ubuntu to.

Thanks everyone for your help. Once you told me it was an issue with the mount I looked into how to fix the NTFS partition mount in linux, I found an extension to install through the software manager and ran it, then I could tell the system to give read and write permissions to the drive. So thank you guys for all your help, I have fix the problem.