It has been confirmed, the game needs at least double the space to decrypt the preloaded files!
Many people are going to have diskspace issues when we are going to decrypt GTA V the 14th.
This is due to the fact that the game needs double the space to be able to decrypt.
Therefor you can use this guide to move the preloaded encrypted files to a different drive without Steam noticing it.
The way I preload games, is that I have used a Junction to move the physical location of my 'epot Cache' folder, but keep its file path the same
If your not familiar with making junctions, its pretty simple, but it does use command prompt.
For those of you who don't know how to do this... I'll put a couple steps on how to do this easily
1: Open command prompt in elevated mode (right click and open as administrator)
2: Navigate to your Steam program directory (e.g. C:\Program Files (x86)\Steam...)copy the path for depot cache. ( E.g. 'C:\Program Files (x86)\Steam\steamapps\depotcache' )now this is where it gets messy to explain with text.
3: Go back to comand prompt - Type in: mklink /j OR mklink /d "<Yourdepotcachelocationhere>"
(DO NOT press enter yet, there is 1 more thing to add to it, AFTER you move your depot cache folder.)
4: Go back to your Steam directory, and Move your depotcache folder to its desired location
5: Once you have moved your depotcache folder, now you copy the Path for it.
(E.g. E:\Preload\depotcache )
6: Go back to command prompt, and paste the path. Using the examples above, the command should now look like:
*{{ mklink /j "C:\Program Files (x86)\Steam\depotcache" "E:\Preload\depotcache" }}*
7: When you have successfully created The junction, it should act just like a shortcut - if you go to your steam directory, you will see depotcache is still there, and its path should be the same, but physically, it is located on the other drive (or Wherever you chose to move it to.
NB! I put *{{ and }}* just to clarify the start and beginning of that command
If you want to revert the changes. Simply just copy the moved files back to the original Steam location etc. "C:\Program Files (x86)\Steam\depotcache"
I can not be held accountable if anything goes wrong. I did as the above said, and it worked fine for me.
2ND Option:
A fellow gamer and also a user at this forumYou must login or register to view this content. has made a small tutorial using Steam Mover, I haven't tried it, but it seems to be very easy.
So now you have two options, do it yourself, if you are not keen using a third party software, or use the software.