Switching from RAID to AHCI

Windows hates you, so it won't boot if you do this. Apparently installing the driver for only IDE/AHCI/RAID on installation is a sensible idea. Windows, why!?!??!

What to do

  1. Boot in whichever mode works.
  2. Force safe-mode booting with bcdedit /set safeboot minimal (as administrator)
  3. Boot to UEFI setup, change to the mode you want
  4. Boot Windows in safe mode
  5. Disable safemode with bcdedit /deletevalue safeboot (as administrator)
    Note that you probably can't launch Terminal in safe mode, because who knows. You'll probably have to use cmd or powershell.
  6. Reboot
  7. Now it works! Wow! How stupid is that?