What does disk cleanup do on a computer? By aaron parson the disk cleanup utility built into windows removes temporary, cache and log files created by the operating system and other programs -- never your documents, media or programs themselves. Exe) is a computer maintenance utility included in microsoft windows designed to free up disk space on a computers hard drive. The utility first searches and analyzes the hard drive for files that are no longer of any use, and then removes the unnecessary files. In the search box on the taskbar, type disk cleanup, and select disk cleanup from the list of results. On windows 10, disk cleanup has been a handy tool for freeing up space after upgrading to a new version and for getting rid of junk files on your hard drive. how to open and use disk cleanup in windows 10 you can use disk cleanup on a regular basis to reduce the number of unnecessary files on your drives, which can free up drive space and help your pc run better. It can delete temporary files and system files, empty the recycle bin, and remove a variety of other items that you might no longer need. Picture a messy house cluttered with old furniture, useless knick-knacks, and crumpled up mail. In the kitchen, the cabinets and drawers are stuffed with bowls and utensils that you never cook with. Once disk cleanup opens, the initial window will ask you which drive you want to clean up. In the next window that opens, check each of the boxes you want to clean up. To the right of each item is the disk drive space each of the items are taking up on the hard drive. What is windows disk cleanup? Windows disk cleanup (cleanmgr. Exe) is a windows snap-in maintenance utility that is used to free up disk space on your computer. This tool can first search and analyze the hard drive for the files that are no longer used. Therefore, the files are growing in number, such as compressed have gone from a few thousand to 248. 000, as with each attempt to run disk cleanup, nothing is removed. You can launch disk cleanup from the start menujust search for disk cleanup. It will immediately scan for files it can delete and display a list to you. However, this just shows files you can delete with your current user accounts permissions.