You can do this before you've even matriculated
Navigating through all the pages and pages of technical stuff in the uni website to set this up is a bit of a minefield - so here's a handy list of just the essential steps.
1. Go HERE
to register for university internet and VPN access.
2. Go HERE
and select which operating system you use.
3. Follow the instructions on the page you are taken to. They are pretty straightforward.
4. Check that you are connected to the VPN (You should see a small, yellow, closed padlock in your taskbar).
5. Go HERE
to find the location of your M: Drive on the university website. (Click on 'Look Up Home Directory Now')
6. Copy your home directory to your clipboard. (It will be something like \\arran.sms.ed.ac.uk\Home\s0123456)
7. Go to the appropriate link and follow the instructions: WINDOWS
to open your M: Drive.
If you haven't already - make a shortcut to your university folder on your desktop, that way you can access it any time you are connected to either the VPN or the internet in University accommodation.