Unreal engien 4?!?

So i go to install Unreal engine 4 on my pc and when i go to install it it tells me i don’t got disk space left so then when i go to change the install to another drive i can’t change it,it just won’t let me click another drive what i mean by that is i want to put it on k drive and it won’t let me click any drive only my main drive but my main drive has no disk space so can i get some help please?!.

Hey [MTG]Dr.pigface,

For installation issues, please visit http://help.epicgames.com/ and use the Email Us button on the side of the page if you don’t find the information you need on the website itself. This will allow you to get in touch with one of our support staff.

Have a great day