Ubuntu – Steam Library must be on a filesystem mounted with execute permissions 1

I also have Steam libraries on an NTFS partition, on Ubuntu 13.04, here is the fstab entry for that partition (I removed the rest):

# <file system>         <mount point>      <type>   <options>       <dump>  <pass>
...
...
...
#add execution right on data partition
UUID=50B06A2EB06A1B2C /media/etienne/data   auto    auto,exec         0       0

You probably need exactly the same options except for the partition's UUID, to get the UUID of your partition, locate your partion in /dev and use blkid, for an example if your partition is /dev/sda1 use: sudo blkid /dev/sda1 You will get a result like this:

etienne@etienne-laptop:~$ sudo blkid /dev/sda7
/dev/sda7: LABEL="data" UUID="50B06A2EB06A1B2C" TYPE="ntfs" 

If it still doesn't work it means you need to add other mount options, in this case have a look at that question.

I fixed it using the following command:

sudo mount -t ntfs -o rw,auto,defaults,exec /dev/disk/by-label/Data /mnt/Data

and setting it to a keyboard shortcut