After that, select Previous Windows installation(s) and follow the instructions from previous step. Optional: If Previous Windows installation(s) option isn’t available for you, click Clean up system files button and wait for the scan to complete. Select Delete Files and wait until the previous version of Windows is removed.ĥ. You should see a confirmation message available. Check if Previous Windows installation(s) option is available. After scanning, it will show you a list containing the files like delivery optimization files, Windows ESD installation. This tool can first search and analyze the hard drive for the files that are no longer used. This process might take a minute or two depending on the size of your partition.Ĥ. Windows Disk Cleanup (cleanmgr.exe) is a Windows snap-in maintenance utility that is used to free up disk space on your computer.
Disk Cleanup tool will now scan your PC for old and temporary files. Select the drive where Windows 10 is installed and click OK.ģ. Please Select Disk Cleanup from the menu.Ģ.When Disk Cleanup tool Application opens up you’ll need to select which drive you want to clean. One More Thing that you would not able to use recovery option to rollback your old data.ġ. Once the the file windows.old have been deleted you could not access the old programįiles or your previous work files. Yes you could delete the file windows.old it will not damage your Computer but before you delete that file you should have check the old programs which you could have needed.