How to enable AHCI in Windows 7

Server Admin

AHCI or rather Advanced Host Controller Interface enables native command queuing and hot-plugging through SATA host controllers (Serial-ATA) for your hard drives. In many scenarios it enables more efficient multi-tasking.  But an issue with AHCI is that if you install the OS without enabling AHCI in the BIOS, enabling it after installation will render your OS unusable.  This is how you solve it...

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