Just wondering if anyone else has had this issue...when I recently upgraded to Mojave from HS, I did a clean install on a brand new NVMe blade inside a kryoM.2 adapter in PCIe slot 4. Everything's been running well so far, with all other HDD/SSD being in enclosures up until this point while I was doing this. When I tried to move my HDD (data disk) back into my mac into drive bay 1, it wouldn't allow me to boot up into the blade anymore, I just get a black screen? I previously had the HDD inside my computer when my SSD was the boot disk, with absolutely no issues, and would like to keep the HDD inside due to the fact it seems to power down when not in use when in the enclosure and also takes a long time to appear on the desktop after reboots and waking from sleep (which is annoying). Any thoughts on why this may be happening now? After putting the HDD back in the enclosure, it of course boots fine from the NVMe. Thanks!