When I run the install for Zemax there is no option to choose a location. It defaults to the C drive with no way to change that...as far as I can tell. My C drive is near full. My D drive is near empty. How do I install on the D drive?

I tried moving the install files to the D drive and run the install from there but it continued to put the files in C where I don't have enough space.. Short of installing a bigger C drive and reinstalling all my programs...etc what can I do?

Thanks for the help and all the best,