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Enable AHCI in the Server BIOS

2014/08/19 12:03

Opening the AHCI function can improve the writing performance of the disk of the server. For details, please refer to the "Server Hardware Requirements". The following are the methods of opening AHCI function.

1) In the process of starting up the computer, keep pressing the "Delete" button of the keyboard, enter the "BIOS" setting.

2) Find the SATA interface setting option, change the "IDE" mode to "AHCI" mode; press the "F10" to save and exit (Figure 1‑1).


Figure 1‑1

Notes: Because the BIOS versions of the main board are not the same, the positions of the "SATA interface" options are different. Recommend you can read the main board manual, and then modify the BIOS.

If the server has installed the operation system, you can set the AHCI mode in the BIOS, it will lead to the blue screen of death. The solution is as follows:

1) First set back to the original normal mode.

2) Start the server.

3) Click the "Start" button, enter "regedit" in the "Run" edition box, and click the "Enter" button.

4) In the pop-up "Registry Editor" window, position:

5) HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\msahci, and then click the "Start" (Figure 1‑2).

Registry Editor

Figure 1‑2

6) It will pop up "Edit DWORD Value" dialogue box, enter "0" in the "Value data" edition box, and then click the "OK" button (Figure 1‑3).

Edit DWORD Value

Figure 1‑3

We have created a video - "Modify the Registry".


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