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

Free up disk space by deleting previous System Image copies & Backups in Windows 11/10 via Backup and Restore > Manage Spaces.

Files you no longer use can be archived to an external drive or the cloud, while downloads, duplicates and temporary files can be deleted altogether. Below, we explain how you can remove unnecessary ...

In order to back them up, Time Machine has to copy the disk image file. If you make any change to the contents of a disk image, the entire file winds up copied to Time Machine.

Image: Mark Kaelin/TechRepublic. Previously, we discussed how to delete files and overwrite them with random numbers using the Format command in Windows 11.

You now have both the image and the mounted image on the desktop. Feel free to throw your most secret documents into this mounted image. Once it’s copied to the image, delete it from your Mac.