Did you know that when you “delete” files from your computer, they can still remain on your hard disk? In many cases, deleted files can be recovered with little effort because most computer ...

If you've ever used a large file discovery tool like Daisy Disk, you may have stumbled upon a peculiarly large filed dubbed sleepimage.

That takes system resources and, for any sufficiently large disk image, also causes older versions of files to get dumped more rapidly to keep newer updates that include the changed disk image.