deletion
If you store all your own documents, pictures etc. in the default "My Documents" etc. folders, then you won't really lose anything if you limit the search to those folders.
Scanning the complete (C:\) drive could be harmful, because it also contains folders with necessary system files.
You could also store your personal files on another partition or drive, to completely separate data from system (files).
Scanning the complete (C:\) drive could be harmful, because it also contains folders with necessary system files.
You could also store your personal files on another partition or drive, to completely separate data from system (files).