For a modern PC, always use a bootable USB or CD. And remember: formatting is permanent—proceed with caution. Need help creating a bootable USB? Check our related guide: "How to Create a Windows Installation USB Drive."
This article is written to correct a common misconception. You cannot directly format a drive from the BIOS. This draft explains why and provides the correct workaround. How to Format Your C: Drive (And Why You Can’t Do It "From BIOS") If you’ve searched for "format C drive from BIOS," you’ve likely run into a frustrating problem: Windows won’t let you format the drive it’s running on. Many users assume the BIOS (Basic Input/Output System) is the place to perform this low-level wipe. The truth is, the BIOS has no built-in command to format a hard drive. format c drive from bios