Best for unallocated space, changing partition sizes, or formatting the drive where Windows is installed? (No – see Method 3 for system drive).
Formatting your hard disk in Windows 10 is a critical task, whether you’re preparing a new drive for use, wiping an old one for resale, or fixing system errors. This process erases all existing data, so before proceeding. Choosing the Right File System how to format hard disk windows 10
: Compatible with older devices but limited to a 4GB maximum file size . Method 1: Using File Explorer (Easiest) Best for unallocated space, changing partition sizes, or
For advanced users, you can also format a hard disk using Command Prompt: Best for unallocated space
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