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Down load to another hard dive

Feb 1, 2010
West Sussex, UK
Lightroom Experience
Lightroom Version
It's still not clear what you mean by "lightroom" in this context. If you mean the catalog, previews and image files, there's no problem in having those on a different drive (internal or external, but the catalog cannot be on a network drive).

But if you mean you want the actual program executable files to be installed onto a different drive, I believe you can use the settings in the Creative Could Desktop app to set a different installation location (Setting>Apps tab).