I would love to move the whole engine to another drive means i would like to move from C to D cause i have an ssd with only 55GB , now my drive is full and i cant even render something anymore. Hope you guys can help me with that
Hey Nightmare,
What you need to do is Uninstall UE4 and re-install it and chose the drive in which you want to install to after clicking the MSI.
Hope this helps 
Tried it already that way but last time i got a download problem :D. I found a solution already i just installed it in G instead of D and i cleaned every bit of the UE from my computer then it worked but thanks for the answer.