Though AHCI has many Advanced features you may need to change from AHCI to IDE for different compatibility reasons. AHCI allows utilization of advanced features like NCQ (Native Command Queuing), hot-plugging etc. Though AHCI mode does not increase the speed at which SATA drives operate, but it exposes many advanced features of SATA, which are not available in IDE mode.
Most SATA controllers allows you to choose AHCI or IDE operation mode for maintaining backwards compatibility. IDE is an old interface standard used for storage devices like hard drives and optical drives and AHCI is an application programming interface standard for newer SATA interface. But users often need to change from AHCI mode to IDE mode after installing Operation System.Go through this article to do that. Generally you need to choice the operation mode, whether AHCI or IDE, before the installation of Operating System. This article is applicable for both Windows 7 and Windows 8. This article will help you to change AHCI (Advanced Host Controller Interface) to IDE (Integrated Drive Electronics) mode after installing Windows Operating System.
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