Questions tagged [ahci]

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

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AHCI required for new SSD?

I do not know too terribly much about computers, but I wanted to try to install SSD as my new boot drive. My computer does not have AHCI and I'm not sure how to update my BIOS or if it will even give ...
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New SSD not appearing in BIOS or Windows

I bought a second-hand HP Z820 workstation. Upon turning it on for the first time, Windows 10 installed and everything works smooth. The machine has two storage devices: a 512GB SSD (slot 0) and a 2TB ...
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SSD thinks it's larger than it actually is

I'm trying to install Fedora alongside Windows 10 on a new laptop. The laptop has two 512GB SSD disks, which in the Disk Management tool showed as just one 1TB disk. I shrunk the partition on which ...
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Switching RAID to AHCI without Windows Reinstall but Safe Mode does not open up

I have an Acer Nitro 7 and I wanted to dual boot it with Zorin OS alongside Windows 10. Since I have only got a 1 TB SSD which has its SATA Mode on RST premium with Optane, I used the answer given in ...
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How to change safely storage controller mode from RST to AHCI in Windows 10?

can you please hint me to a solution. I try to change the storage "controller mode" in Windows 10. Currently it is set in my Bios/UEFI to RST mode. I like to change it to AHCI. Is it right that AHCI ...
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Windows XP AHCI

Is there Windows 7/Vista's MSAHCI.SYS driver ported for Windows XP because I don't know what AHCI driver is needed for my PC? Please don't ask why I am using XP or upgrade my Windows version.
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Is it possible to increase SSHD cache with an M.2 SSD?

I have an ROG GL503 Strix SCAR edition laptop which only came with a 1Tb 5400-rpm FireCuda SSHD, and it just isn't cutting it, load-time wise. So I am now planning to buy an M.2 NVMe drive with ...
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Is there a way to force bootcamp to boot up in macOS via the windows registry or command line?

It's like this: I have inadvertently uninstalled the pre-existing AHCI(?) sata driver while trying to update the same so that windows could recognise the new 2TB sata SSD I just stuck in there (...
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Slow SATA I/O after kernel oops (SuperMicro X11SBA-LN4F)

I am in the process of replacing my (Gentoo) Linux router with a new one built using a SuperMicro X11SBA-LN4F. I used my existing Gentoo Linux router's configs as a starting point (including the ...
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Is it worth switching from RAID to AHCI on on windows 10 pc

Currently I have RAID configured on my PC in BIOS (not at software level). I wanted to use dual boot with ubuntu but this is not possible with RAID cnfiguration. Will my pc suffer in performance for ...
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Win 7 AHCI is Switching to Raid on reboot

I have a Dell Latitude E6440 that is switching back to raid despite being set to AHCI. The remaining Bios settings are staying as they should and once swapped back the laptop boots up as needed. Any ...
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476 views

Is AHCI a hardware feature or a software \ firmware feature (capability)?

This question is posed because a Dell Optiplex 390 does not have AHCI. If it is a software feature then AHCI can be added. I am trying to follow the discussion associated with adding a kernel ...
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332 views

Unable to upgrade current 32GB SSD on Dell XPS 15 9550

I have a Dell XPS 15 9550 with a 1000GB HDD and 32GB SSD and want to upgrade the SSD which is currently only used for cache (from what I know). I bought the Samsung 970 Pro NVM m.2 SSD. I plugged it ...
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How to switch from IDE to AHCI after installing Windows Vista [duplicate]

Background Advanced Host Controller Interface (AHCI) is a technical standard defined by Intel that specifies the operation of Serial ATA (SATA) disk controllers. When it is supported by your ...
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553 views

Very slow SSHD in AHCI mode affecting Windows only

Some time ago, a friend bought this ZEUSLAP laptop from AliExpress and she asked me to install Ubuntu alongside the original Windows 10. Relevant specs: 240GB SSD + 1TB HDD (this turned out to be an ...
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Dell xps 15 9570 dual boot windows 10 with ubuntu 18.04, serious errors

I have been attempting to dual boot my Dell XPS 15 9570 with Ubuntu. I turned off fast boot and changed raid on to ahci. I had the latest version of Ubuntu loaded onto my USB flash drive and I tried ...
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System Won't Boot If I Change from RAID ON to AHCI (Windows 10)

System Configuration - SATA Operation I am trying to enable AHCI for a "secondary system experiment" so that the drives will be recognized in the installer. Thing is, when I enable AHCI windows won't ...
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Switch RAID to AHCI without reinstalling Windows 10

My Dell XPS 9560 uses RAID as a SATA controller mode. After I change it to AHCI, the Windows 10 will not boot. What should I do if I don't want to reinstall Windows 10? RAID = Redundant Array of ...
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392 views

Can I mark a hard drive as removable (storahci service)?

Basically, I need the opposite of last time: I have an internal SATA Port that is connected to a "dock" which allows removing the drive. I would like the drive to show up in the "Safely remove ...
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7k views

Change SATA mode to AHCI before reinstalling Windows on new drive - possible lose of data on non raid drive?

Currently I've got 5 HDD connected to my PC: 1 is the OS drive, 2 are connected into raid0 volume0, 2 are connected into raid0 volume1 (the volume numbers might be wrong, I'm writing this from memory, ...
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Cannot boot pfSense USB

I've got a mini PC (Qotom quad core Mini PC Q190P) that I can not seem to get to boot the pfSense installation, despite other machines being able to boot from the same media, and this machine being ...
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505 views

Why did Windows XP require AHCI drivers when it could already load itself without?

When Windows XP boots without AHCI drivers on a SATA system, you get a BSOD like 0x0000007b. What I don't understand is why it can't load without AHCI drivers. Clearly it was already able to load the ...
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290 views

Running AHCI breaks SMART monitors?

I'm running this Intel H77 motherboard and Win7x64. I had BIOS configured to run SATA in IDE mode, so Intel RST was complaining. I just switched BIOS to run AHCI and updated the RST drivers, and now ...
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HDD takes a long time to respond from idle, but SMART tells me that spin-up time is fine

I have an HDD that I've been using for a while. It's a Samsung HD753LJ 750GB running on SATA. According to CrystalDiskInfo it has a Power On Count of 5,174 and Power On Hours of 17,664. Not sure if ...
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649 views

HDD not being detected by AHCI after HDD cloning; only by IDE

I've done a 1:1 HDD copy, containing Ubuntu 16.04, from a IDE drive to a 1 TB SATA HDD, using Clonezilla. The 1 TB HDD was previously used for Windows. The 1 TB HDD isn't being recognized by the BIOS ...
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742 views

SATA port multiplier: Drives not recognized

I have a port multiplier with a JMicron JB321 chipset. It connects, power ups and only shows the Drive that is connected on the first port. My SATA Config is at AHCI. My Board is: GA-H81M-SP2V A ...
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145 views

Windows 10 not accepting AHCI enabled, why?

My notebook has a ordinary 500GB HDD boot with Windows 10 and a small SSD onboard (24GB) that I intent to use as cache (since Samsung has discontinued ExpressCache). I have to change some settings and ...
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Convert Secondary Harddrive to AHCI from IDE

Sorry if I'm covering ground that's already been discussed, but I'm struggling to find an answer to my specific problem. I've recently (finally) managed to coerce my computer into upgrading to ...
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389 views

Asus P8H67-V AHCI Driver issues when installing Windows [duplicate]

I'm trying to install Windows as a dual-boot on an Asus P8H67-V (Socket 1155) PC running Elementary OS (Debian).  Here's my configuration: Intel Core I5-2500K Samsung 840 Pro SSD This previously had ...
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SSD is very slow on PC

Yesterday I installed Samsung 850 EVO ssd in the place where HDD was installed on my HP Pavilion Dv6t 6c19tx. Then I installed fresh Windows 10 pro on it and everything went smooth. I didn't notice ...
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486 views

How do I enter this into regedit

This post here explains a method for setting a port as internal but I don't understand exactly how to enter it into regedit. Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SYSTEM\...
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5k views

How to solve AHCI and Sata interface

I have an Samsung 850 Evo 256 Gb as you can see the Samsung magician tells me that I don't have AHCI mode although I set the Windows registry for that mode by creating Msahci sub-key and modifying it'...
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564 views

Having SSHD while using an SSD working on AHCI mode

So I have an SSD working on AHCI mode. I'm planning to add an SSHD to my rig, so the question is do I have to change SATA controller to RAID mode when I got my SSHD? (to enable its Built-in SSD ...
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413 views

mSata 32GB is not recognized by Windows 10

So this is odd. I have a 32GB SSD connected into my motherboard through a mSata port. This device is recognized by the BIOS, but Windows 10 will not list it as one of my drives. When I run the tool ...
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361 views

I want to boot windows7 x64 with AHCI, but the BIOS does not even try

I just discovered, that BIOS was not in AHCI mode, and that's why my newly bought SSD was at low speeds. I installed a Linux on the SSD, it works perfectly in AHCI mode. Now my problem that if I want ...
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Win7 Turning on AHCI

I recently purchased a 3TB WD internal drive as a media storage. I thought this would be no problem since i have a UEFI Bios (ASRock P67 Pro3). After not being able to use any of the storage beyond ...
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Windows 10 “media driver missing” on installation

[cross-post from MS Answers community as I doubt they will be able to help me there] [Update: I just tested the Windows8.1 Iso: It works. This seems to be a bug with the Win10 Build] Procedure: ...
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How to reset the Intel SATA controller ROM?

I recently attempted installing Windows Vista in AHCI mode. I suspect that this adventure has somehow rendered the built-in Intel SATA controller inoperable in AHCI mode. I started off with a clean (...
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903 views

How do I know that my Samsung HD503HI hard drive supports AHCI?

I have Samsung HD503HI ATA Device (SATA) hard drive. I found that AHCI is giving some performance boost and I want to try it. I would reinstall Windows after so drivers are not problem but can my ...
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Need help to install AHCI driver on Win XP without reinstall

Trying to find solution I came across this LINK here, but encountered lot of pain and questions which are not described. I have Gigabyte MB H61M and did not succeed to work it out. Here is my ...
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Does switching SATA/AHCI mode in BIOS affect Windows OS and data in the hard disks

Suppose the following situation: Each desktop machine have 3 internal SATA hard disks of different sizes (500GB, 1TB and 2TB) The BIOS have 3 types of SATA/AHCI mode (Disabled/IDE, RAID and AHCI) The ...
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6k views

AHCI and RAID for BIOS settings when using 2 or more SATA hard disk

My third-hand desktop machine have the following BIOS settings: At what scenario should I choose 'RAID' and what scenario should I choose 'AHCI' and what other scenario should I choose 'DISABLED'?
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HD Windows 7 IDE to AHCI on Windows 8.1 SSD

I have Windows 8.1 installed in a SSD as AHCI. I installed Windows without any other hard drive connected to the MB. I have my old hard drive of 1TB with Windows 7 installed in IDE mode. I connected ...
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Installing Windows 7 x64 on Asus M5A78-M LX V2, SATA Driver

I'm trying to install a fresh Windows 7 64bit on a computer with a M5A78L-M LX V2 motherboard and two SATA disks. The setup process shows the error "No device drivers were found. Make sure...". I've ...
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Intel Mobile Express Chipset SATA RAID Controller (iastora.sys) corrupt on boot

Running a Dell Latitude E7440 on EFI + SecureBoot + Windows 8.1 + BitLocker and I randomly get start-up issues where the OS is flagging iastora.sys as corrupt. With no action taken I can choose to ...
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How to switch from IDE to AHCI from outside the bios?

I want to change my sata hard from ide to ahci. But in my advanced bios menu there is no option to do that three is no ide configuration or sata configuration. I'm using laptop is there another way ...
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How to run SSD in XP with SATA hard drive to IDE adapter

Any tips please? I have a 840 EVO SSD, a SATA Hard Drive to IDE (ATA-133/100) UDMA PATA Adapter and XP. I have an old Dell Dimension 4550 with a soon to fail HD so since I have a spare SSD, want to ...
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6k views

SATA(AHCI mode) - Why an OS needs a AHCI driver, while BIOS can boot from HDD?

What is the relation between AHCI and SATA? How come an OS cannot operate a SATA controller without an AHCI driver, while the BIOS knows how to boot of a SATA hard disk? What are the difference ...
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1k views

Lenovo Update on ThinkPad x230 w/ SSD confused about AHCI drivers

Using Win7 Enterprise 64-bit on a ThinkPad x230 with an SSD. Lenovo Update 5.06.1006 has me install Intel Rapid Storage AHCI driver for Windows 64 ver 11.2.0.1006 from Intel dated 5/30/2012 After a ...
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Doing a clean install of Windows 8.1 x64 on a SSD - should I use RAID or AHCI?

when i first setup my computer about a year ago, i left it at the default AHCI when i installed windows 8. after doing so i was told by a computer tech that i should've just used RAID. i was confused ...