This message was posted on behalf of Intel Corporation
Thank you for contacting our support community.
We understand your situation regarding the Intel® Optane™ Memory.
We would like to inform you for secondary/data drive acceleration support, Intel® RST Pre OS UEFI driver 16.0.2 or later is required and this is done through a BIOS update, so we recommend you to contact your motherboard vendor in order to confirm if your system has a BIOS update available that contains the Intel® RST Pre OS UEFI driver 16.0.2 or later.
In case there is no update, then you will need a system that has the proper BIOS support. For more information you can check these articles:
Frequently Asked Questions for Intel® Optane™ Memory -Intel.com
Secondary/Data SATA Drive Acceleration with Intel® Optane™ Memory -Intel.com
Software and Platform Support for Intel® Optane™ Memory -Intel.com
Also, for Secondary acceleration, the drive is required to be formatted with a GPT partition as well as the boot drive.