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.
As per event logs error, it seems that the Windows(R) 10 fast startup is enabled. We recommend you to disable the fast startup because of Optane(TM) will accelerate the startup process. Please follow the next steps:
To disable Fast Startup, go to Start > Control Panel > Power Options and click "Choose what the power buttons do" from the column on the left.
Scroll down to "Shutdown settings" and uncheck the box for "Turn on fast startup".
Click the "Save changes" button to apply the changes.
Also, as per Optane(TM) FAQ, please check the reason why the Optane(TM) shows less space:
The capacity shown in the Windows* operating system for the Intel Optane memory series module is less than the 16 GB or 32 GB noted on the box. Why is this?
The operating system and related tools report a smaller capacity than you see on the box. The module uses a small portion of memory media management and maintenance. The listed density of 16 GB and 32 GB is the raw density of the 3D XPoint Memory Media. The total user capacity remains constant throughout the life of the drive.
Please let us know if the situation remains after disabling the fast startup.