Advanced Host Controller Interface (AHCI) is a technical standard that specifies the operation of Serial ATA (SATA) host bus adapters

learn more… | top users | synonyms

28
votes
4answers
32k views

Why should I choose (or not) AHCI over IDE in my PC's BIOS settings?

I've noticed in the BIOS settings of the newer PCs I own that I can configure the drive controller work either in AHCI (Advanced Host Controller Interface) mode, or else in IDE mode. I'm suspecting ...
24
votes
3answers
67k views

Change from IDE to AHCI after installing Windows 8

I had my drive controller configured for IDE when I installed Windows 7. This didn't change when I upgraded to Windows 8. I now need to enable AHCI, but doing so causes Windows to fail to start. It ...
13
votes
1answer
2k views

How can I enable AHCI on a SATA drive after installing Windows?

Can I enable AHCI after installing Windows 7 in a SATA drive that was on IDE mode?
9
votes
3answers
48k views

SATA drives: What is the difference b/w IDE mode and AHCI?

I just built a PC for the first time. My Gigabyte motherboard notifies me after the POST that I have SATA drives operating in "IDE MODE". It asks me if I want to switch to AHCI mode to allow hot ...
9
votes
2answers
1k views

New SSD (Corsair) takes 1-2 minutes before it's found after first boot

My new SSD Corsair CSSD-F60 actually works - using it for boot and system disk (Windows 7 64-bit). But when first (cold-) booting the PC it's not properly found by BIOS and Intel ICH9R Controller. The ...
7
votes
3answers
15k views

Can I change from BIOS IDE mode to AHCI mode at any time? [duplicate]

Currently my Windows 7 computer is crashing during startup, after loading the AMD achix64s.sys driver, if I enable BIOS AHCI mode for the disks. It boots fine with IDE mode. Since I need my computer ...
7
votes
2answers
7k views

Should AHCI be enabled for an SSD?

I have ordered a OCZ SSD and it will be the first that I have installed. In prepping for it's arrival and install, I reviewed MSI web site to be sure I do as much right the first time as possible. On ...
6
votes
8answers
104k views

How to enable AHCI in Windows XP without reinstalling

This question is part of a larger list of things I'll need to do before installing a new SSD drive, but I think it deserves its own question. Current setup: A dual-boot machine with Windows XP ...
6
votes
4answers
19k views

How can I enable AHCI mode after Windows Vista install in IDE mode and before/for Windows 7 clean install? [duplicate]

I just purchased a 2TB Fantom USB2/eSATA external hard drive. Unfortunately it revealed my oversight when my first custom system was built last Summer. I installed Vista Home Premium 64bit in IDE ...
6
votes
1answer
787 views

How to get AHCI support on an IDE Windows 7 installation? [duplicate]

I installed Windows 7 onto a SSD with the motherboard in IDE mode. Now when I try to change the motherboard to AHCI mode, Windows 7 will not successfully boot (blue screens mid-boot). How can I add ...
6
votes
2answers
2k views

Is it worth reinstalling to enable AHCI on my SSD in order to improve compile performance under Visual Studio?

I am compiling to an SSD connected through SATA using IDE emulation on Windows 7. Unfortunately, I forgot to enable AHCI when I installed, and though there are ways of performing surgery on Windows ...
5
votes
2answers
4k views

BIOS setting: AHCI or RAID (when using SSD + 2x hard drive in RAID-0)

I want to add a new SSD and use it as system drive with Windows 7 x64 installed. As driver I chose newest Intel Rapid Storage driver (not MSAHCI). I know that I have to use AHCI as BIOS setting for ...
5
votes
2answers
2k views

how to make SATA drive appear as removable drive?

Now my secondary drive shows as non-removable. (AHCI mode is set in BIOS). So, I need to make it removable.
4
votes
4answers
11k views

RAID vs AHCI on Windows7 x64 ASUS

I have an ASUS p5ke-wifi/ap which has built-in RAID controller. From the BIOS, I can choose between 3 controller types: IDE RAID AHCI In that order. This setting was set to AHCI when I installed ...
4
votes
1answer
4k views

Changing from RAID to AHCI and Windows 7 will not boot

I had a RAID0 array that for all intents and purposes went to hell. I put a new SSD (same on-board Intel controller) and installed a new copy of Windows on it and all the drivers (Intel Rapid Storage, ...
4
votes
5answers
3k views

Stuck at “Starting windows..” when switching to AHCI mode

I had a Windows 7 system working fine in AHCI mode and decided to change the motherboard to another brand. I created an image of the boot drive. I changed the motherboard which runs in IDE mode by ...
3
votes
3answers
8k views

Using an SSD with no AHCI [ICH7 base] - Windows 7 hangs frequently

I have a Shuttle Intel G31 + ICH7 (base -- not M/R etc) system. I just bought an OCZ Vertex 3 120gb [VTX3-25SAT3-120G] which includes the Sandforce 2218 firmware. The ICH7 does not support AHCI. I ...
3
votes
1answer
880 views

Crackling/Popping audio, high DPC Latency from Intel Rapid Storage Technology -drivers

I'm sorry if this landed on the wrong stack, I'm not entirely sure if this or serverfault would be more suitable. I have a very strange problem, when I install any iRST driver newest or older ones my ...
3
votes
1answer
975 views

Enabling AHCI in BIOS for SSD

I am trying to help a friend with a desktop upgrade. It is an old machine with an Intel DG31 main board. The board has 1 IDE port to which a DVD-ROM drive is connected, and 2 SATA ports. 1 SATA port ...
3
votes
1answer
1k views

AHCI, Windows 7 and can only boot with Windows DVD present

Foolishly, I installed Windows 7 with my new SSD set to IDE. I would like to change it to AHCI. I have done this before, with a different motherboard. What happens: I set the controller to AHCI in ...
2
votes
3answers
8k views

Which SATA operation mode for SATA III SSD in laptop?

Which is the best setting in BIOS for SATA operation mode for a laptop to connect SATA III based fast SSD drive, and why? ATA AHCI RAID On (Intel Rapid Storage) There will be no RAID set in system ...
2
votes
1answer
722 views

BIOS won't allow SSD as default boot drive

I've been using a Vertex3 SSD as my Windows 7 boot drive in IDE mode for a few months without problems with a ASRock A75M-ITX motherboard. Today, I ran the Microsoft fix-it to enable the AHCI ...
2
votes
2answers
1k views

Windows 7 will start in SATA RAID mode but not in AHCI

I have installed Windows 7 on my PC (Gigabyte ga-p55-ud5) with the SATA controller set on RAID mode. After that, I've decided to try to install Mac OS X and to do so I had to set my SATA controller to ...
2
votes
3answers
2k views

Windows 7 New SSD SATA AHCI?

I recently got a new laptop (Dell Latitude E6410) which came with a regular hard drive. I removed the hard drive and installed Windows 7 64 bit fresh. I've been doing some reading about possibly ...
2
votes
2answers
94 views

no burner support

most freeware cd/dvd burning software (cdxpburner,burnaware,etc) report either no support or do not recognize my laptop dvd writer. Just purchased a new laptop with this problem. It is a lenovo G530 ...
2
votes
1answer
276 views

Updating SandForce SSD on JMicron controller in AHCI mode

I would like to update my A-Data S599 drive using ASUS P5V-VM DH board. The board have 2 controllers one is VIA and the other is JMicron. Only JMicron supports AHCI mode which is required to update ...
2
votes
1answer
110 views

Linux detects only 4 of my 6 SATA drives

The issue I'm having is that only the first 4 of my 6 drives are showing up - sda through sdd. No sde+sdf in udev, no sde+sdf in /sys/block. I have an MSI 760GM-P23FX motherboard, and as near as I ...
2
votes
1answer
737 views

How to remove RAID flag on unstriped drive without losing data?

I have a Gigabyte Z68X-UD4-B3 motherboard. It advertises this new thing called "XHD", which is like RAID but makes a SSD and traditional-style drive work together to enable high speed with high ...
2
votes
1answer
1k views

Any downside to using default AHCI drivers under AMD?

It seems that installing AMD's AHCI drivers prevents the SSD "trim" command from working. Users are being encouraged to use of the default AHCI drivers that ship with Windows 7 because those support ...
2
votes
1answer
2k views

Enabling AHCI causes BIOS to hang on POST

I have an ASUS P5QL Pro motherboard and a Seagate 7200.10 HDD. When I enable AHCI in the BIOS the BIOS hangs when detecting the HDD. After having searched around the web for a while this seems to be ...
2
votes
1answer
242 views

One hard drive missing after converting from ide to ahci

I have two 500GB SATA HDD in my desktop running XP. After converting from IDE to AHCI, the HDD I use to store data can no longer be accessed from XP. It shows only the first partition as 150GB, and ...
2
votes
3answers
993 views

Asus Formula I AHCI / Crucial CT256M4SD1 SSD boot issue

I have an Asus Formula I, the BIOS version is the latest 1402. I have 2 CD-Drive and 2 Regular Drives attached to the SATA ports. Now I've bought the Crucial CT256M4SD1 and want to use it as boot ...
2
votes
0answers
2k views

Why boot fails with bios SATA Mode as AHCI?

In a nutshell, I am trying to figure out for some Jetway engineers and myself, why the custom bios they made me does not allow SATA devices to boot in AHCI mode. Obviously, this is difficult to ask ...
1
vote
2answers
8k views

Enabling AHCI for SSD under Win7 BootCamp on Macbook Pro 2011

I've just installed a new Samsung 830 256GB SSD and have configured BootCamp with Lion and Windows 7. Under Lion, I have installed Trim Enabler. Under Windows 7 I have installed the Samsung (Wizard) ...
1
vote
1answer
6k views

Dell Latitude E6410 BSOD Switch to AHCI

Just received a brand new laptop. Wiped the installed Win 7 64 bit and put on a fresh copy on a new SSD. After the fact I realized I should have AHCI mode for performance. So I followed this guide ...
1
vote
2answers
3k views

Can't boot into fresh install of Ubuntu with AHCI enabled

I had previously a Windows XP installation on a RAID1 array (controlled via Intel Matrix Storage Manager). I decided to ditch it and install Ubuntu 12.04 (using "software RAID"). So first I reset both ...
1
vote
2answers
1k views

Windows XP Setup Fails to Recognize USB Floppy after formatting AHCI disk

I am attempting to install Windows XP Professional x64 onto a HP EliteBook 8540w. I have downloaded both the latest Intel Rapid Storage Technology drivers and the Intel Storage Matrix drivers that ...
1
vote
2answers
168 views

Sudden hard diskn AHCI failure to initialize

My system has been running smoothly, with no changes for months, but this morning when I turned it on it hung on AHCI init. I narrowed it down to being some kind of issue with my second HDD (boot ...
1
vote
1answer
352 views

Stop Windows asking me to eject ATA device [duplicate]

Recently reinstalled windows and have AHCI enabled (perhaps it has something to do with AHCI mode). Basically, I have the option now to eject my hard drives in the "Safely remove hardware and eject ...
1
vote
2answers
878 views

Switching from IDE to AHCI and booting Fedora

I have switched SATA controller mode from IDE to AHCI, and my Fedora (the latest release) doesn't boot now. I'm not surprised by this fact alone, but I am surprised with the message I'm getting: ...
1
vote
1answer
5k views

How to know which AHCI driver Windows 7 is using?

I have AHCI enabled in Windows 7 through HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci. My Asus motherboard comes with a drivers software including AHCI drivers. I used their setup ...
1
vote
2answers
686 views

Workaround for Vista BSOD when setting SATA drive frm AHCI to standard when trying to setup Dual Boot w/XP

I was trying to setup a friends laptop to dual boot vista/xp like mine. However after some searching, I found that his BIOS has his SATA setup to use AHCI mode. If I change that back to legacy or ...
1
vote
1answer
2k views

How do I determine if my controller is in IDE or AHCI mode in Linux?

I have an old MacBook Pro 4,1 (early 2008) - but I suspect an answer would apply to many MacBook Pros. It has an Intel IDE/SATA controller (ICH8M/ICH8M-E). I have installed a patched MBR that is ...
1
vote
1answer
8k views

Switching Windows Server 2003 from SATA/IDE to SATA/AHCI mode post-install

A while back i installed Windows Server 2003 (32-bit), but had IDE mode rather than AHCI set in the BIOS. Predictably just changing the BIOS makes 2003 blue-screen on boot-up, which to my knowledge is ...
1
vote
2answers
560 views

AHCI and Memtest86+

I've got a motherboard with SATA AHCI enabled, and I need to disable it to run Memtest86+ (because Window's built-in RAM diagnostic tool isn't worth a barrel of warm snot), and because the Memtest ...
1
vote
1answer
2k views

Samsung Magician doesn't detect SSD when set to AHCI mode

I just installed a Samsung 840 Pro SSD in my box, NOT as the system drive, but just as a regular HD. I have a Gigabyte board[*] with 6 SATA ports in an Intel controller and 2 additional ones in a ...
1
vote
1answer
100 views

AHCI and write-caching

In the readme for an update to the Intel Rapid Storage AHCI Driver from Lenovo, they suggest that to improve performance I should turn off Windows write-cache buffer flushing on my drives. ...
1
vote
1answer
214 views

Switched 3 HDD's from IDE to AHCI, I cannot see one of them in Windows now

I noticed my setup is running in IDE mode, which I changed to AHCI in bios. 1) SSD with Windows 8, booted up successfully in safe mode, after that, booted up in normal mode easily 2) 1TB HDD with ...
1
vote
1answer
615 views

Asus m5A97 RAID/AHCI configuration

I'm trying to RAID two SSD's in raid 0 to install games on, but I want to have my OS running off of my HDD (which it is currently installed on). I have the HDD plugged into SATA 5, and the SSD's ...
1
vote
0answers
350 views

HDD spins up/down in a strange way during Windows 8 shutdown

In my PC I have one SSD and one HDD. In the SSD I have installed Windows 8, while the HHD is for personal data storage. Until yesterday the SSD was in AHCI mode and the HDD in IDE mode. The problem ...