How can I install the 4.1 update on a alternate drive?

My disk space is to low to install 4.1.0 on c drive but can find an option to install the update on an alternate drive using the launcher.

how can I fix this?

Hi there LiquidJoy,

You are correct in that there is currently no functionality to select the install directory for different version of the engine itself, but you can create a separate installation of the launcher on another drive to install 4.1.0 on. If your projects do not appear at first in your new editor, you can select “Browse…” from the Project Browser window and navigate to your project’s .uproject file which by default can be found in "C:\Users\YourNameHere\My Documents\Unreal Projects\YourProjectName"

I hope this helps you.

Thanx Flibbo