Hi Asteroid, I had a similar problem to you and tried all the suggestions on this site to no avail. My BIOS also has the drive seen as in AHCI mode. I diagnosed that the problem MAY have started after I set my original Magician  v5.5(which was working) to Rapid mode, I also used  'Overprovisioning' to set aside 10% of my drive. I also started getting a BSOD 'Kmode not handled' loop that stopped my PC starting. When PC actually did start the Magician gave  error message, ' an error occurred during execution of scanning' (which could explain the 'Kmode not handled' BSOD, since bootup was looking for a driver that it couldnt find, and I couldn't diagnose which driver that was ) but then would open Magician with the 'not supported' leaders you suggested. After using the other methods in this post and reinstalling etc. it still didn't work. Finally I booted into safe mode, uninstalled Magician, clicked into 'Drive Management' via Device Manager and extended the drive to recover the  (unallocated) 10% overprovisioning partition,  then installed Magician v6, rebooted, and wahey! problem(s) solved. Hope this helps someone. Windows 10 Pro, Intel i73770k, 32gb Ram Asus P8Z77-V mobo, Asus RTX Ndvidia 2060 Super 8GB 1TB Sandisk Ultra System Drive, 1TB Samsung 860evo projects drive. ... View more