I can’t update to 4.14 as i dont have space
once you’ve installed the engine to a drive, i’ts next to impossible to move it as it stands… sorry epic knows about it but hasn’t done a work around yet, there are a few programs that emulate it to another drive, but as far as i know it still keeps it on the original drive for some people, the only way to move the “Engine” to another drive is to uninstall it and reinstall it, you can select the drive upon install. i just had to do this to mine,
(The deletion of your engine wont disturb your projects btw) you just have to re download what ever engine your project is using 
Hi lukagrel007,
Try the instructions on the following documentation and let me know if it does not resolve you issue: Installing UE4 To A Different Hard Drive
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