How to open AHCI mode

  
under win7 system The first time to install win7 system with solid state hard disk needs to check whether AHCI mode is enabled. If it is not turned on, it will seriously affect the performance of solid state hard disk. Before installing win7 system, you need to enable AHCI mode. After the win7 system, when the AHCI mode is entered in the BIOS setup, a blue screen will appear and the computer system will not enter. Therefore, you must first open the AHCI mode and then install the win7 system. For details on how to enable the AHCI mode, please refer to the following:
Open the AHCI mode in the win7 system. You need to change the registry first. The specific operation method: press the Windows key +R Key input <;regedit” Enter to enter the registry editor. 2. In the "Registry Editor" window title bar, navigate to the HKEY_LOCAL_MACHINESYSTEM CurrentControlSetservicesmsahci branch, then in the right window, double-click “Start”. 3. In the pop-up "Edit DWORD Value" dialog box, change the value in the "Value data" box from 3 to 0 (as shown below), and click the "OK" button. And close the "Registry Editor" window and restart the computer.

You can restart the system after changing the registry. Press 3-5 consecutively to enter bios when the system starts, select Integrated Peripherals and enter.

After entering the Integrated Peripherals page, select PCH SATA Control Mode and press Enter. The default display is IDE mode. Select the third option AHCI and press Enter. Press F10 to save and restart the system.

After rebooting, the system will install the AHCI driver for you by default. Generally, it will prompt to restart after about 30 seconds after entering the desktop. After rebooting, go to the official website of the motherboard to download the latest AHCI driver (the one that comes with win7 is the millennium old demon, and replaced decisively). The following picture takes my motherboard as an example.

The downloaded driver is in 7z compression package format, extract it to the same file name, then right click on the computer - click "Manage", and then open the device manager. -IDE ATA/ATAPI Controller - Driver - Update Driver - Select "Browse your computer to find the driver software" - locate the AHCI driver you downloaded and unzipped in the pop-up window. Click OK - Update - After the update is completed, there will be a prompt to delete the USB port in the lower right corner of the taskbar. Leave it alone and the system prompts you to reboot. Follow the prompts, restart the computer

If there is no accident, during this restart, the careful friends will find that the time when the win7 logo screen starts to enter the desktop is shortened a lot, exactly It is a lot smoother. Haha, this means that your AHCI mode has been turned on, hurry into the computer-management to see it, the display state under the computer-management panel-IDE ATA/ATAPI controller after the successful opening of AHCI is very refreshing. The AHCI mode is not turned on here is the IDE

The official data sheet of the previous Western Digital 1T blue disk (WD 10EALS-00Z8A0)

The Western Digital 1T blue after the AHCI mode is turned on again. The disk benchmark test chart is smoother than the IDE mode. As for the reading speed, the movie that has been used for more than half a year with BT can still have this performance. Should I say that my RP is good or that the hard disk is really powerful after the AHCI mode is turned on?

The last one Zhang opened the system default score map after AHCI mode to smash a rumor that can improve the system score after opening AHCI mode. I don't know how the heroes who scored 6.5 or even 7.2 after the AHCI mode is turned on. It looks like I see it. Are you still on the A platform, is the disk controller technology of the A platform more advanced than the latest Sandy Bridge platform of INTEL?

In view of the many AMD platform friends in the reply, the AHCI of the A platform is required to be opened. Tutorial, I also add here: because of the different chipsets, the AMD platform will completely open the AHCI and NCQ process two steps more than the intel platform. That is to say, the friends of AMD platform after completing all the above steps in order, you also need to go to the motherboard to download the raid driver and update, and finally download and install AMD raid xpert to open NCQ.
The above is the whole process of starting AHCI mode under win7 64-bit system. Interested friends try it. After all, it's not too much trouble to reinstall the system. According to my method, you can make your hard drive work in a better state with a few minutes of moving your finger. Moreover, the individual feels that the process of jumping out of the win7 icon to the desktop and opening the software is slightly faster than the IDE mode when booting up, and the use will be smoother. It is not a psychological effect, it is really effective. Also, those friends who say that the boot is slow, I tell you the reason: that is because after the AHCI is turned on, there will be one more AHCI self-test process when booting, and the successfully opened friends will see the self-test information when booting.
If a friend has turned on the AHCI mode and the performance of the hard disk is significantly reduced or there are various incurable diseases, follow the first step to enter the registry msahci branch and change the value of the start function back to 3, then the computer restarts. In the BIOS, you can restore the AHCI mode back to the IDE and save the system to restore to the IDE mode. However, this is generally not the case.
The above is to introduce you to the specific method of how to open AHCI mode under win7 system, as long as you follow the above steps, it will be easy to get.

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