VeloSSD including version 188.8.131.52 is not UEFI native boot compatible.
Beginning with version 184.108.40.206 we support EFI / UEFI native boot.
So caching a boot volume on a computer with UEFI firmware works then. Release Date will be in February 2013.
Please do not use older Versions of VeloSSD on a EFI / UEFI computer, we will not support that, it is not recommended.