|top| | Reformat Hard Drive Windows 10

This is the most common method for formatting secondary drives (like D: or E: drives) or external USB sticks. Open (Win + E). Click on This PC in the left-hand sidebar.

Use NTFS for internal Windows drives. Use exFAT if you plan to use the drive on both Mac and PC. Allocation Unit Size: Leave this at default. reformat hard drive windows 10

Use this if the drive is new and unallocated, or if File Explorer cannot see it. This is the most common method for formatting

An older format. Limited to 4GB per file. Best for small USB sticks used on older devices (like car stereos or printers). Use NTFS for internal Windows drives

Finally, after confirming the format, Windows 10 will execute the operation. A quick format typically completes in under a minute, erasing the file system table but not overwriting actual data. A full format (unchecking quick format) writes zeros to every sector, which securely erases data but can take several hours depending on drive capacity. Once finished, the drive will appear empty and ready for new data, with a clean NTFS or exFAT structure. To verify success, open File Explorer, right-click the reformatted drive, select “Properties,” and confirm that “Used space” is near zero and the file system matches your selection.