BitLocker Drive Encryption USB BIOS Logo Test

This test determines whether USB flash devices support reading during the pre-operating system environment.

This test restarts the machine one time during the test and requires that a USB drive is plugged into system during the test.

Test details

Associated requirements

System.Fundamentals.TrustedPlatformModule.SupportSecureStartUpInPreOS System.Fundamentals.TrustedPlatformModule.TPMEnablesFullUseThroughSystemFirmware System.Fundamentals.TrustedPlatformModule.Windows7SystemsTPM System.Fundamentals.USBBoot.SupportSecureStartUpInPreOS

See the system hardware requirements.


Windows 7 (x64) Windows 7 (x86) Windows 8 (x64) Windows 8 (x86) Windows Server 2012 (x64) Windows Server 2008 R2 (x64) Windows 8.1 x64 Windows 8.1 x86 Windows Server 2012 R2

Expected run time

~2 minutes


Basic Certification




Running the test

Before you run the test, complete the test setup as described in the test requirements: WDTF System Fundamentals Testing Prerequisites.

This test creates a file on the USB mass media and then reboots the computer to determine whether the file can be read during the bootmgr phase (pre-operating system environment).


For troubleshooting information, see Troubleshooting System Fundamentals Testing.

To review test details, review the test log from Windows Hardware Certification Kit (Windows HCK) Studio.

JJ123578.wedge(en-us,VS.85).gifReview the test log

  1. Go to the Results page in Windows HCK Studio and open the Logs node.

  2. Click the BitLocker Device Encryption USB BIOS Logo Test node.

  3. Open the following logs:

    • Under Prep and USB Write Test: FveUSBPreTest.xml

    • Under Parse Result and Cleanup: FveUSBPostTest.xml

  4. At the end of each log file, the numbers of test cases that passed and failed are listed.

  5. If a test case failed, search the log file for Error File and Result=Fail for more information.



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