makeurmark (7/30/2020)
1. I have read that you can not install Reallusion product onto any other drive apart from C: (system drive) - is this true?
You can install the program files and content files on any drive you wish. You are not restricted to using the C: drive.
2. Is it cleaner to use the Reallusion hub to un-install and re-install?
The Reallusion Hub is the recommended way to install and update your software.
3. Is it cleaner/safer to remove all content and download/install to the new drive? Rather than copying from HHD to SSD.
If you wish to move your program and content files to another drive then it is recommended to uninstall first and then reinstall again choosing the correct drives during installation. Then when once complete you can either install any content packs again or you can simply copy the content from the HDD to the SSD.
I hope this helps.