Can i uninstall GOG in my C: drive and then reinstall game library to my D: drive ?

I have all of my games installed on my D: drive. I can run them through Galaxy or directly from a shortcut on the desktop, depending on whether or not there are achievements I want to earn.

In Galaxy, you'll find the option to set a default installation path under Settings/Downloads. I hope this helps.

You can also (after you set the defaults how Lynette decribed) move your games folder to D: and then have Galaxy import the folder. If some games do not work after that (wrong registry settings maybe), do a "verify and repair" this should set things straight.

Are you asking if the Galaxy client can be installed on D:?

Thank you so much, I must have overlooked it upon installing Galaxy Yes

You can also safely transfer your games, instead of uninstalling them.

Ah. I will defer to those who are using Galaxy, then. My guess is "yes", similar to installing games.

Good luck with getting it situated the way you want.

The answer is yes, I have Galaxy installed on D.

You can uninstall GOG Galaxy from C: drive and reinstall it to D: drive. Move all your games to D: drive as well and then add game folders into Galaxy.
Beware, it could take a while for Galaxy to check all game files, in some rare cases it may strongly suggest to update a game even if it was installed recently with latest version. Typing [speaking] from personal experience of course.