You could also just leave your Oculus set up on the original drive and move the apps to the new drive. This function is already built in to the desktop app.
If you go to "Settings" - "General" - "Library Locations" - Edit
You can add extra locations for your apps while leaving the Oculus app on your C drive.
Also, in your library, you can individually move games/apps to whichever locations you have set up.

i5 6600k - GTX1060 - 8GB RAM - Rift CV1 + 3 Senors - 0 PROBLEMS 1 minor problem
Dear Oculus, "If it ain't broke, don't fix it", please.