Hiding a windows partition using /etc/fstab [thanks to @DaveB] using this addition
# Windows
UUID=D8143D2D143D104C /mnt/WinOS ntfs noauto 0 0
Obtain the UUID for your system by using this command
sudo blkid
The MBR was visible in my Places menu so I struggled with a method to hide the 41 MB partition.
I found adding the diag flag using gparted caused the partition not to be displayed
Changing flag is Not suggested for Windows Boot, Win, or Recovery Partitions
- To add a flag the partition must be unmounted
- Select the partition by clicking on the text area - in my example the one with label GRUB
- Right click [opposite click if you've configured your mouse for left hand ops] and choose manage flags
- choose diag and the partition won't be displayed
There are possibly better methods, but this is a single user system that's a part of my home network so I stopped looking for more elegant solutions.