This article applies to Symantec Encryption Desktop version 10.3.1 only.
Symantec Encryption Desktop encrypts boot disks differently depending upon whether your Windows 8 system boots in BIOS mode or UEFI mode. Windows 8 UEFI boot systems are not supported in this release.
To determine whether your system boots in UEFI mode:
"BIOS Mode: UEFI"
If this line is missing, or the value is populated with the makers name, your system is booting in BIOS mode.