The best thing to do is transfer things to a backup drive (preferably on more than one drive just to be safe) instead of deleting them.
The best thing to do is transfer things to a backup drive (preferably on more than one drive just to be safe) instead of deleting them.
Unfortunately there's really no good way to store digital files for more than a couple decades max, so getting high quality prints of everything to tuck away somewhere safe is also a good idea in case the drive fails.