Your computer will now boot into the Windows Setup screen.
You cannot format a hard drive directly from the BIOS screen.
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Once the computer boots from your external media, you aren't yet in the OS; you are in a pre-installation environment. To format without actually installing a new OS:
From the Windows installer’s Command Prompt: how to format hard drive from bios
This is where you use the BIOS to tell the computer to load the USB tool instead of the hard drive.
Modern BIOS (UEFI) interfaces do not have built-in tools to format drives. The BIOS is used to manage hardware settings and boot order, not file systems. Your computer will now boot into the Windows Setup screen
While it is a common misconception that you can format a hard drive directly within the BIOS settings, the BIOS (Basic Input/Output System) does not have built-in disk formatting tools. Instead, you must use the BIOS to boot your computer from a bootable device—like a USB drive or DVD—that contains the necessary formatting software.
Because the BIOS itself cannot format, this guide gives you the correct method: . If you only need to erase all data quickly, consider using DBAN (Darik’s Boot and Nuke) for secure wiping—but that also requires booting from a USB, not the BIOS itself. To format without actually installing a new OS:
Since you cannot format from the BIOS menu itself, you need to bring your own formatting tool.