How can I enable AHCI on a SATA drive after installing Windows?
Solution 1:
You need to make the msahci
and/or IastorV
drivers be loaded early.
(Note: For Windows 10, the built-in driver is called storahci
.)
According to Microsoft KB 922976, run Fix it 50470 or open regedit, navigate to one of these keys:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\msahci
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\IastorV
and set the value of the Start
dword to 0.
Reboot and enable AHCI in BIOS, now it should work.
Remember to create a restore point before any changes, just in case.
The same registry changes can be done via Cmd, using reg add
or sc config
:
-
Check current parameters (and make sure the service exists):
sc qc msahci
-
Change the boot mode:
sc config msahci start= boot
(Note that
start=
is a single parameter, butboot
is separate.)