Here's one recent topic that covers it: viewtopic.php?f=4&t=16258
telemanr wrote:You don't need to uninstall anything.
Rerun the HW installer and choose Custom. You can then choose where to store certain files.
You JUST want to store the cache files on the SSD. Those are what is used when you load an organ. That's when you want speed up.
mdyde wrote:... you need to re-run the installer to move the installation as desired. The 'Planning installation locations' section in the main Hauptwerk user guide (pages 18-19 in the current v4.2.1 version) and the 'Changing installation locations' section (page 25) cover it in more detail.
Depending on the size of your new ... drive (SSD), in the 'custom' option in the installer you could either choose to put all of the installation folders on it (if it was very big), or (more commonly), you could choose just to put the 'Internal working data' and 'User data' components on it (which are the speed-critical ones) but keep the 'Sample sets and components' component (which is very large, but not particularly speed-critical) on your C: drive.