Switch from IDE to AHCI after installing Windows 7 or 8

If you installed your Windows 7 or Windows 8 accidentally in the legacy IDE mode and want to switch to the AHCI mode, Windows will not boot after you switch from IDE to AHCI in the BIOS. Here is the solution how to fix this (without re-installing Windows)…

In Windows 7
  1. Open Registry Editor.
  2. Navigate to the following key;
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\msahci
  3. Change the Start DWORD value from 3 to 0 as shown in the picture below.
  4. Reboot your PC and set the SATA mode to AHCI in the BIOS.

 

In Windows 8 / 8.1
  1. Open Registry Editor.
  2. Navigate to the following key;
    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\storahci
  3. Change the Start DWORD value from 3 to 0.
  4. Reboot your PC and set the SATA mode to AHCI in the BIOS.
Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s