This message was posted on behalf of Intel Corporation
Thank you for your interest in the Intel® Optane™ SSD 900P series.
Considering the fact that the SSD worked as expected before the cloning process, the recognition issue may be either related to that process or, as you mention, the BIOS/setup process. Either case, our suggestion is to contact the corresponding technical support team
If you consider that the cloning process is not the root cause of the issue, please contact your system manufacturer’s technical support team http://www.dell.com/support/incidents-online/us/en/4 to receive the appropriate steps to configure your BIOS.
In case you have another question, don’t hesitate to contact us.