This PowerShell command will show you size information of disks, partitions, and volumes in Windows 8.
Retrieve list of installed Modern UI apps and uninstall them using Windows PowerShell. This allows you to remove both built-in apps and the ones installed from Windows Store.
Here are some ways to delete files older than X number of days in a folder and all its subfolders in Windows using PowerShell and Command Prompt.
Know how to find files that are larger than a specific size in a directory and all its sub-subdirectories using PowerShell and Command Prompt.
Recursively rename file extensions in folder and all its sub-folders using either Command Prompt or PowerShell in Windows