After migrating to Lightroom CC, can I delete the "Lightroom" folder on my hard drive?

If you want use both apps, for the power of Classic but syncing with mobile of LR Cloud, you would want to do the opposite. Keep using LR Classic, set all folders to sync, and then use LR Cloud at your leasure as it will download smart screenshots or originals if desired. Just make sure anytime you import you import into classic. Now you get the best of both worlds. Folders from LRC don't sync with LR Cloud though so you have to manually recreate those and faces don't sync so you have to do face tagging in both. So if you don't need LR Classic features then go all in with LR Cloud.

If you do the other way of LR Cloud as primary app and LR Classic is secondary one, then you will run into many more troubles. The gap between LR Cloud and Classic lessens more each year. But still several items notably no plugin support.

But to answer your question, yes, once you use the LR Cloud Migrate feature, after you can delete you original Lightroom folder. LR Cloud will download smart previews into it's own spot, and if you enable download originals in settings, you can choose where to download those, make sure not same place as where LRC originals are.

Hi davidk70673976,

What size if the Lightroom folder you want to delete? If that is not taking a lot of storage and impacting the available space, I'd not recommend you to delete it. Lightroom Classic CC stores your catalog, backups, previews in this folder so if you are still using Lightroom Classic CC, keep this folder as it is.

Thanks,

Akash