Update the BIOS to the latest version if it isn't updated, booting from M.2 drives was initially not well-supported, I think they fixed it in newer versions(or at least they should have). Either way, put the latest BIOS on a USB, plug it in, then boot into BIOS, then use the M-Flash option. You can find the latest BIOS here:
https://www.msi.com/Motherboard/support/MEG-X399-CREATION#down-bios
BIOS files usually come in a compressed folder, did you de-compress them first?I also tried to update the lasted BIOS but when I download the file and go to M-Flash for update the file in my flash drive didn’t show up that why I can not update ! Any help for that bro ? Thank
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I already check my one is the lastest BIOS already I don't see any New update from MSI site.Update the BIOS to the latest version if it isn't updated, booting from M.2 drives was initially not well-supported, I think they fixed it in newer versions(or at least they should have). Either way, put the latest BIOS on a USB, plug it in, then boot into BIOS, then use the M-Flash option. You can find the latest BIOS here:
https://www.msi.com/Motherboard/support/MEG-X399-CREATION#down-bios