How to keep underlying file when deleting a Filefield value I have a Content Type with a FileField (Image, in particular). When one of these values is deleted, then Drupal deletes the underlying file as well (as long as no other nodes reference the same file).

I don't want the underlying files to be deleted, I want them to remain in the filesystem. Are there any hooks or other techniques I can use to make sure it remains after its FileField value is deleted?
This has already been answered:
https://stackoverflow.com/questions/2101754/drupal-filefield-remove-file-from-node-but-leave-on-server