If you want to change from IDE to AHCI, or AHCI to RAID etc, there's no need to edit the registry as in the case of Windows 7. Windows 8 has provided a safe way to modify the boot mode. Here it is:
Boot normally into Windows.
Run 'msconfig' and set Boot to Safe Boot (minimal). Restart.
Go into BIOS and set SATA to RAID (or AHCI). F10, save and exit.
Windows will now safe boot.
If you check the Device Manager, you will notice that Win 8 has loaded the RAID (or AHCI) driver.
Run 'msconfig' and set Boot to Normal (ie unclick Safe Boot). Restart.
Windows 8 will now boot normally using the RAID (or AHCI) driver.
Done!
The above method can be used to switch between different modes. Basically, Win 8 enables all boot modes at Safe Boot, load the appropriate driver and then 'off' the rest. That's the reason why there is a 'StartOverride' tree under the various drivers (iaStorA, iaStorV, atapi, StorAhci and pciide). for my case, only the iaStorA is 'on' (ie start parameter is set to '0' with no StartOverride tree underneath).
Boot normally into Windows.
Run 'msconfig' and set Boot to Safe Boot (minimal). Restart.
Go into BIOS and set SATA to RAID (or AHCI). F10, save and exit.
Windows will now safe boot.
If you check the Device Manager, you will notice that Win 8 has loaded the RAID (or AHCI) driver.
Run 'msconfig' and set Boot to Normal (ie unclick Safe Boot). Restart.
Windows 8 will now boot normally using the RAID (or AHCI) driver.
Done!
The above method can be used to switch between different modes. Basically, Win 8 enables all boot modes at Safe Boot, load the appropriate driver and then 'off' the rest. That's the reason why there is a 'StartOverride' tree under the various drivers (iaStorA, iaStorV, atapi, StorAhci and pciide). for my case, only the iaStorA is 'on' (ie start parameter is set to '0' with no StartOverride tree underneath).
