After Windows writes the Startup Key into your USB drive, you’ll receive the message that the disk is now required to start up the system.

Make sure you change the drive letter of your USB drive to A: and click OK.

You will be asked to insert a disk into drive A: to save the Startup Key.

Choose the System Generated Password option, and then select Store Startup Key on Floppy Disk and click OK.

Press the Windows key + R to open the Run box.

So you need to assign the drive letter A: to your USB flash drive before following the steps below. It’s so old that it only stores the Startup Key on the A: drive.

Syskey (also known as SAM Lock Tool) was introduced since Windows NT. How to Lock & Unlock Windows PC Using SysKey? In this tutorial we’ll walk you through how to enable SysKey in Windows 10/8/7/Vista/XP, and use a USB drive as a key to lock & unlock your computer. Whenever the computer boots up, you will have to insert the USB drive to login.

You can store the Startup Key to USB drive.

Is it possible to set up a USB Drive to log into Windows without installing any software on the PC? SysKey is a built-in Windows utility that allows you to set up a Startup Key/Password to protect the SAM (Security Accounts Management) database.

Lock flash drive