How To Format — On Windows 10

You format the C: drive while Windows is running on it. You must boot from external media (a USB installer).

Force-formatting stubborn drives that Windows refuses to touch, or removing "Write Protected" errors.

This is the easiest way to reinstall Windows 10 without needing external media.

This guide covers both.

Formatting prepares a storage device (hard drive, SSD, USB flash drive, SD card) for use by Windows. It creates a file system (like NTFS or exFAT) that organizes data and allows Windows to read and write files.

If your PC is sluggish or you’re preparing to sell it, a system reset is the best way to "format" the operating system. Method 1: Using the Built-In Reset Tool (Recommended)

You format the C: drive while Windows is running on it. You must boot from external media (a USB installer).

Force-formatting stubborn drives that Windows refuses to touch, or removing "Write Protected" errors.

This is the easiest way to reinstall Windows 10 without needing external media.

This guide covers both.

Formatting prepares a storage device (hard drive, SSD, USB flash drive, SD card) for use by Windows. It creates a file system (like NTFS or exFAT) that organizes data and allows Windows to read and write files.

If your PC is sluggish or you’re preparing to sell it, a system reset is the best way to "format" the operating system. Method 1: Using the Built-In Reset Tool (Recommended)