: Find the disk you want to format in the list. It will usually be labeled as "Disk 1" or similar.

This method is best for external drives or secondary internal partitions that are already visible in your system. How to initialize and format a new hard drive in Windows

The method for formatting a hard drive in Windows 7 depends on whether you are formatting a (data storage) or the primary drive (where Windows is installed). Formatting a Secondary or External Drive

If you are formatting your primary "C:" drive, you must have a Windows 7 installation disc or bootable USB to reinstall the OS. Method 1: Formatting via Windows Explorer (Easiest)

how to format a hard drive windows 7