I may have gone a bit further beyond my knowledge than I should have. I was expecting fstab to already have entries for these partitions, but I see it does not.
So what I am suggesting requires that you (as root) create a couple of directories:
and then add these lines to /etc/fstab:
/dev/sda2 /mnt/sda2 auto noauto,user 0 0
/dev/sda5 /mnt/sda5 auto noauto,user 0 0
This should allow any user to mount these partitions from the command line with commands like:
So I am hoping it will work in the GUI as well.
I was not sure the specification for the file system (3rd column) so I specified "auto" hoping the OS could figure it out. You might want to try the command line mount
command I showed above just to make sure it can. When you've demonstrated it works that way, try it from the GUI.
I am not sure how permissions work for the NTFS file system (accessed from Linux). From what I've just seen while searching for info on this issue, it might work the same as as for FAT file systems. I am familiar with that. It may
be necessary to add some more options in to get the access you want.
Another possibility would be to change fstab such that these partitions are automatically mounted at boot time. If you do that, I am pretty sure you will need some more options to allow users other than root to actually access the files.