Enable AHCI on Intel chipsets


Recommended Posts

Some of you might know that AHCI enables Native Command Queuing support and Hot Plugging for SATA drives. Unfortunately it can usually be enabled only when installing Windows, by using a floppy drive.

Spported southbridges: ICH6R, ICH6M, ICH7R, ICH7DH, ICH7M

Instructions:

1) Make sure AHCI is not enabled in your BIOS, otherwise this guide is pointless for you.

2) Back up your Windows folder and prepare a boot disk in case this guide fails!

3) Download 79im05ww.exe from http://www-307.ibm.com/pc/support/site.wss...ocid=MIGR-62909

4) Extract the file to C:\DRIVERS\WIN\SATA.

5) If you have the ICH7M southbridge, go to step 8.

5) Open C:\DRIVERS\WIN\SATA\PREPARE\IMSM_PRE.inf in Notepad.

6) Replace any instance of DEV_27C5 with the following, according to your southbridge:

ICH6R - DEV_2652

ICH6M - DEV_2653

ICH7R - DEV_27C1

ICH7DH - DEV_27C1

ICH7M - DEV_27C5

7) Save the file and close Notepad.

8) Click Start, select Run.

9) In the Open field type C:\DRIVERS\WIN\SATA\PREPARE\INSTALL.CMD and click OK.

10) Restart your computer, and enable AHCI on in your BIOS Setup.

11) Start Windows XP or Windows 2000. The Found New Hardware wizard will start automatically.

12) If running Windows XP:

1. Click No, not this time then click Next.

2. Select Install from a list or specific location (Advanced), then click Next.

3. Select Search for the best driver in these locations.

4. Select Include this location in the search: and specify the path, C:\DRIVERS\WIN\SATA, and click Next.

13) If running Windows 2000:

1. Click Next.

2. Select Search for a suitable driver for my device (recommended), then click Next.

3. Select Specify a location, then click Next.

4. Specify the path, C:\DRIVERS\WIN\SATA, and click OK, then click Next.

14) Click Finish.

15) When the System Settings Change window appears, click Yes. The computer restarts.

Link to comment
https://www.neowin.net/forum/topic/457699-enable-ahci-on-intel-chipsets/
Share on other sites

Confused here. I'm running a single SATA 250GB drive as my primary boot disk. (Well, I've partitioned it into two, but it's one physical drive.) Intel ICH7R southbridge.

No RAID for me, as I've only got one drive, but what advantages will I get if I run my drive in AHCI mode rather than in IDE mode? Can this even be done - this IS the drive I'm booting from...

Confused here. I'm running a single SATA 250GB drive as my primary boot disk. (Well, I've partitioned it into two, but it's one physical drive.) Intel ICH7R southbridge.

No RAID for me, as I've only got one drive, but what advantages will I get if I run my drive in AHCI mode rather than in IDE mode? Can this even be done - this IS the drive I'm booting from...

As I said in the first post:

AHCI enables Native Command Queuing support and Hot Plugging for SATA drives

:no: I am not able to set the BIOS in AHCI mode

I use a Asus P5PL2 mobo with Intel ICH7DH southbridge

I can see in BIOS that the SATA controller use IDE mode for my Seagate Barracuda disk

It is a sata2 disk,and my mobo support sata2 up to 300Mb/s,so I would realy like the sata

controllers to work in AHCI mode.

When I enter BIOS,under IDE configuration,there is a line called:Configur SATA As..,but the only option

is: Standard IDE.As a discription to this option it says:"When in AHCI/RAID mode,controller is forced to

Native mode".

Can anybody please tell me how to configur my SATA drive for best preformence?

Is there a way to configur it to AHCI mode?

I hope somebody has time to help me!

  • 2 months later...
lhost' date='May 3 2006, 09:26' post='587471595']

Some of you might know that AHCI enables Native Command Queuing support and Hot Plugging for SATA drives. Unfortunately it can usually be enabled only when installing Windows, by using a floppy drive.

Can't you enable AHCI by just installing Intel's Matrix Storage Manager/Technology?:

http://www.intel.com/support/chipsets/imsm/

http://www.intel.com/support/chipsets/imst/

  • 1 month later...
  • 1 month later...
  • 2 weeks later...

I literally spent a DAY trying to get AHCI to work. I was trying to load WMCE and after pressing F6, loading the drivers, and watching Windows install....my PC would crash and reboot at the Loading Windows screen (the one you see right after post with the animated bar).

I tried everything I could think of (believe me....that is a lot of stuff....I'm 39 and been building PC's since I was 12)

THIS WORKED LIKE A CHAMP!!!!!!!!!!!!!

THANK YOU, THANK YOU, AND THANKS A HECK OF A LOT!!!!!!

:D :) :laugh: :rofl: :woot: :yes:

One note for anyone attempting this procedure. In step 6 the instructions say REPLACE. Notepad has a REPLACE feature. USE IT! It will keep you from making a typo like another poster did.

  • 4 weeks later...
  • 1 month later...
  • 1 month later...

hi to all! i'm Ruben from italy. I have a p5b deluxe and two 250gb sata2. I would like to know where to connect those hd. I know that there are difference between red and black connector. I would like to know also how to set sata on bios and which driver install. i have read of ahci but i don't understand very well what is it. thank you for your help and sorry for my bad english

  • 1 month later...

Here is the solution (it worked fine for me)

With the BIOS on IDE open Regedit and go to:

HKLM\System\CurrentControlSet\Services\msahci\Start

and change whatever you have on DWORD to '0'

Raboot

Reboot again, enter BIOS

Change IDE to AHCI, Save

Let the OS redetect your drives

Reboot

That's it, hope it helps

  • 3 months later...
  • 2 weeks later...
Any news regarding this guide but with the ICH9 chipset?

I have the P35 chipset w/ ICH9 (Gigabyte P35-DS3R)... with an existing Vista installation I did this:

HKLM\System\CurrentControlSet\Services\msahci\Start

and change whatever you have on DWORD to '0' (default value was 4)

like Ropera mentioned, I installed the Intel Matrix Program/Drivers, rebooted went into Bios... changed from RAID/IDE to AHCI save and everything went fine...

  • 2 months later...

I used that method originally on my Asus P5W DH Deluxe for both Windows XP 32 bits and Vista 32 bits but now I have a double problem:

Now I have a Asus P5K Deluxe with ICH9 and I'm with both Windows XP and Vista x64 edition.

So instead of this drivers version on the firts post (http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-62909), I'll have to get another one right?

I have the P35 chipset w/ ICH9 (Gigabyte P35-DS3R)... with an existing Vista installation I did this:

HKLM\System\CurrentControlSet\Services\msahci\Start

and change whatever you have on DWORD to '0' (default value was 4)

like Ropera mentioned, I installed the Intel Matrix Program/Drivers, rebooted went into Bios... changed from RAID/IDE to AHCI save and everything went fine...

Can you post a print screen of all DWORD keys you have under \Start forlder? Inside mine HKLM\System\CurrentControlSet\Services\ it doesn't even have a \msahci or \msahci\Start forlders, I'm confused :wacko:

Please help me, I'm desperate.

This topic is now closed to further replies.
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Posts

    • Ditto that, I have a few Alexa devices around the house to control lighting and such for a disabled person I live with, and it shows a *lot* of ads on the display. The dots are simple but effective. A lot cheaper too.
    • Go for a Echo Dot or Pop instead. These Echo shows just advertise to you.
    • NetSpeedTray 1.3.3 by Razvan Serea NetSpeedTray is a lightweight, open-source Windows network monitor that shows live upload and download speeds directly on the Taskbar. Designed for efficiency, it quietly sits in the system tray, conserving CPU and battery with dynamic updates. It blends seamlessly with Windows 10/11, adapts to light/dark themes, and auto-positions to avoid overlaps. Features include accurate interface detection, customizable display, optional mini-graph, color coding, granular font and unit control, detailed per-interface history graphs, safe data management, and easy CSV export—bringing the network monitoring Windows forgot. NetSpeedTray key features: Lightweight & Efficient Runs quietly in your system tray without consuming resources. Features a "Dynamic Update Rate" that lowers refresh frequency when the network is idle to save CPU and battery life. Native Look & Feel Blends seamlessly with Windows 10/11 UI. Smart detection for light and dark taskbar themes ensures text is always visible. Intelligent & Adaptive Positioning Automatically finds empty space next to your system tray and shifts to make room for new icons, preventing overlaps. Seamless OS Integration Behaves like a native Windows component. Hides instantly with auto-hiding taskbar Hides when a fullscreen app is active Smart Network Monitoring Accurate by Default: Auto mode identifies your main internet connection and ignores noise from VPNs or virtual adapters. Easy Interface Selection: Switch effortlessly between Auto, All, or Selected network interfaces via intuitive radio buttons. Total Visual Customization Free Move Mode: Unlock and place the widget anywhere on your screen. Optional Mini-Graph: Real-time graph of recent network activity with adjustable opacity. Color Coding: Customize colors and speed thresholds to quickly see network status. Granular Display Control Text & Font: Adjust font family, size, weight, and alignment. Units: Automatic (B/s, KB/s, MB/s) or fixed Mbps display. Precision: Set decimal places and always show them for uniform appearance. Detailed & Intelligent History Graph Smart Scale: Logarithmic scale shows low-level traffic and large spikes clearly. Per-Interface Filtering: View speed history for specific adapters (Wi-Fi, Ethernet, VPN). Safe & Efficient Data Management: Adjustable retention, automatic cleanup, optimized database. Easy Data Export: Export raw data to .csv or save high-quality graphs for reports. NetSpeedTray v1.3.3: The Updater Fix A stabilization release that repairs a critical regression in v1.3.2: the app shipped without OpenSSL, which silently broke every HTTPS request — including the built-in update checker (the "Could not check for updates" error many of you hit). This release restores it, hardens the build so it can't happen again, and fixes a startup crash plus four other reported bugs. Changes: Fixed update checking — Resolved a critical issue that prevented the app from checking for updates ("Could not check for updates"). Fixed startup crash with Auto-Cycling — The app no longer crashes on launch after enabling Cycle display mode. Fixed incorrect network speeds on 10GbE adapters — Multi-gigabit network cards now display speeds correctly instead of being stuck at 0. Improved color coding — Default color is shown when idle, and color/threshold changes now apply immediately without restarting. Fullscreen visibility fix — The widget now correctly stays visible over fullscreen apps when Keep Visible is enabled. Improved AMD Ryzen temperature detection — More reliable CPU temperature monitoring for Ryzen processors. Cleaner upgrades — Installer now removes outdated application files during upgrades, preventing DLL/version conflicts while preserving user settings. Improved stability — Fixed potential DLL loading issues by excluding critical OpenSSL and NumPy components from UPX compression. Better settings window — Scrollbars removed and layout improved for a cleaner experience. Localization improvements — Updated translations and completed missing UI text across all supported languages. More reliable releases — Added regression tests covering recent critical fixes, bringing the test suite to 196 passing tests. [full release notes] Download: NetSpeedTray 1.3.3 | 87.9 MB (Open Source) Download: NetSpeedTray Portable | 101.0 MB View: NetSpeedTray Home Page | Screenshot Get alerted to all of our Software updates on Twitter at @NeowinSoftware
    • Why Delta Chat is the best decentralized messenger you have probably never tried by Paul Hill There is no shortage of messaging apps out there; we have WhatsApp, Messenger, and Telegram, just to name a few. While Meta has taken steps to incorporate encryption into Messenger and WhatsApp, they still leave a lot to be desired. If you are in the market for a messaging app that promotes security, privacy, and optional anonymity, you'll want to read what I have to say about Delta Chat. For those not familiar with Delta Chat, rather than relying on centralized servers as you do with Facebook Messenger, it relies on email. Essentially, it is a chat interface that feels like a messaging app, but secretly in the background, it is firing off emails. In the past, you used to have to sign in with your email account. When you sent messages to people, it would just be sending encrypted messages to their inbox, which their Delta Chat client would decrypt. When I first learned about Delta Chat, it required users to sign in with an email account, but I was pleasantly surprised upon trying it in 2026 that this is no longer a requirement, or the preferred method was to use the app. Recently, I’ve tried UAD-ng on my old Nokia 3.4 to disable most of the Google apps because the bootloader is locked, and this is the next best option. While finding replacement apps in F-Droid, I came across Delta Chat again, and it has undergone quite a big change since I last used it, with its new chatmail relays, which no longer require you to sign in to your own email account, providing anonymity, and they offer greater security. Android and Desktop Delta Chat apps. Not only does it run on my de-googled phone, but it also works on desktop computers and iOS, making it truly ubiquitous. For me, Delta Chat is a wonderful alternative messenger because it gives you more control. It supports switching between different profiles, which you can set up super quickly; you don’t register a username, you don’t register a password. The only thing you do have is a random string email address on a chatmail relay (which you don’t have to memorize). To maintain access to your profile, you just need to add a second device to your account via QR code or make a backup of your account, which you can restore later. Fail to do these, your account is gone - as it should be if you don’t want to leave accounts that could get hacked later on. My decision to block Google stuff on my Nokia was done for practical reasons; the device sucked when it launched, and it sucks even more now. The nice thing about F-Droid and the apps within is that they’re usually lightweight, free of bloat, and work well on that device. What was inconvenient for me was that it was hard to send messages from that device, say if I wanted to copy a code over to my main phone or send family members a link from that device. That’s when I decided to look at the available chat apps and saw Delta Chat. Another nice thing about Delta Chat is its notifications. Some messaging apps rely on Google’s ecosystem for notification transport on Android; however, with Delta Chat, it can use Google’s solutions if you have Play Services or MicroG installed. Otherwise, it is able to keep a background connection to the chatmail relay server so that you can get notified when you receive a message. As free software, the code of Delta Chat is open for all who want to take it and build upon it. In the future, if the developers of Delta Chat make a catastrophically bad decision and take the app in an undesirable direction, users can take the code and fork the project. This contrasts with closed-source apps from corporations that can take their products in any direction they like. By relying on free software instead of closed-source programs, you actually control your computing. I’ve spoken at length about how running this type of software is like owning your own home rather than renting it. The same applies here; if you use Delta Chat, you don’t need to worry about it going away in the future. Whether it is Telegram, WhatsApp, or Messenger, you are required to register a username and password to use these services. A major flaw in this design is that anyone can try various passwords and potentially break into your account with your complete chat history intact. Sure, there is encryption in Messenger, where you need a second PIN and two-factor authentication in Telegram, but breaches happen all the time. Unlike before, when you used to sign in to your email account to send and receive messages, the primary way to do it now is to create an account on a chatmail relay. The resulting email address is a random string followed by the name of the relay you pick. This means you can start and begin adding contacts Without a username and password, you either need to ensure you have a backup or at least one device running your Delta Chat profile. The primary way to log in on another device is to go to the settings and add a second device. Then, you’ll just scan a QR code with your new device, and it’ll log in to your account and sync all your chat history and contacts. To end users, Delta Chat just looks like any instant messenger; however, it is really sending your messages as encrypted emails to your contact. This is pretty cool from a censorship perspective, as it makes the service more difficult to block. Previously, the main way to use the app was by logging in with email, but nowadays, it’s recommended that you use chatmail relays. Chatmail relays temporarily hold messages in case your device is offline. They are cheap, simple servers that don’t store data as group states. Other information, like your name and avatar, only exists on your device and the devices of those you share your contact information with. The relays are also decentralized and operated by various groups and individuals. It is even possible to set up your own chatmail relay, but most people will want to use one hosted elsewhere. To keep your messages secure, Delta Chat uses a secure subset of the OpenPGP standard that gives you automatic end-to-end encryption. It also uses Secure-Join to exchange encryption setup information through QR-code scanning or invite links. Autocrypt is also used to automatically establish end-to-end encryption between contacts and all members of group chat, but sometime this year Autocrypt v2 will be rolled out, bringing post-quantum resistant encryption and forward secrecy. The Delta Chat FAQ is an interesting read that explains many more details about the app. Credit: Pexels Delta Chat is unique among messaging apps because it is built on email, a technology that’s decades old and isn’t going anywhere soon. What’s more is that email is not centralized either, so it’s far more difficult for any authoritarian regime to disrupt the Delta Chat app. I haven’t spoken too much about features yet, so I will do that now. Delta Chat allows you to do one-on-one chats, group chats, and create channels. It also supports file sharing and making audio and video calls when chatting one-to-one, but it’s not available for group chats right now. At the time of writing, the calling functionality is disabled and can be enabled in Settings > Advanced > Debug Calls. I have used the video calling feature, and the quality is excellent. It works over WebRTC, another open standard. The app also lets you send voice notes, enables disappearing messages, and has its own app ecosystem. I did try playing chess one time there, but it was a bit spotty; though, we did manage to complete the game with a victory for me. To add people to Delta Chat, you can either give them your Delta Chat link or your QR code to scan. These are the only ways to add users, so you won't have any spam bots bothering you. If the people you want to chat with don't have the app yet, just send them your link, and it will take them to a webpage where they can install the app and then add you. It's really quick for them to install it and get started, which is nice. Credit: Microsoft. The Majorana 2 quantum chip unveiled in 2026. I do not think quantum computers are too far out now, and I do hope that Delta Chat is able to push out Autocrypt v2 sooner, rather than later, so bad actors do not attempt to collect encrypted communications and then decrypt them in the future using quantum computers. By getting people’s messages post-quantum-safe now, users won’t have to worry when quantum computers start cracking legacy encryption. Overall, I would recommend this app to people who are already past WhatsApp and Messenger and have perhaps begun using apps like Telegram or Session. It shares a lot of characteristics with these apps and goes a lot further than Telegram in terms of security. By being based on email, it is also resistant to censorship, and the lack of a username and password makes you anonymous (if you want to be) and safe from brute force password cracking attempts. Let me know in the comments if you’ve tried Delta Chat recently. Do you think it's a good bulwark against governments that are tightening their grip on the internet?
  • Recent Achievements

    • One Year In
      bernmeister earned a badge
      One Year In
    • Week One Done
      Scoobystu earned a badge
      Week One Done
    • Week One Done
      tuben earned a badge
      Week One Done
    • First Post
      OffsetAbs earned a badge
      First Post
    • Reacting Well
      OffsetAbs earned a badge
      Reacting Well
  • Popular Contributors

    1. 1
      +primortal
      474
    2. 2
      +Edouard
      220
    3. 3
      PsYcHoKiLLa
      156
    4. 4
      Steven P.
      73
    5. 5
      FloatingFatMan
      71
  • Tell a friend

    Love Neowin? Tell a friend!