A BIOS exemption has been provided in Endpoint Encryption for PC 5.2.3, which is available from the McAfee download site using a valid grant number. For additional information contained in the Endpoint Encryption for PC 5.2.3 release notes, see PD22408.
NOTE: Specific details are provided in the release notes on Page 7, section 5230.1 Add ability to specify exclusions for USB BIOS hand back.
To add further exclusions, create a file called USB.INI and deploy it to the client with the File
Location set to "[SBFS]\Boot" (without quotes) in the file's advanced properties.