Dell Sata Ahci Controller Driver
I don't have the AHCI drivers and I'm not sure how to get them. I have tried the regedit options that I have found, but msahci doesn't exist in the registry and another option I found was already at its correct value. I have booted with AHCI in the BIOS, but the device manager doesn't have anything AHCI related and Samsung Magician says it isn't working either.
Under storage controllers, Microsoft Storage Spaces Controller is the only thing there. I am running Windows 10.Is it worth the trouble of getting this to work properly and if so, does anyone know how?Possible relevant system parts:i7 6700kAsrock Z170 Extreme4850 Pro 500 GB SSD2 TB HDDThanks for looking.
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Dell Sata Ahci Controller Driver Download
UPDATE 2: Dell officially responded and confirmed that they released a new BIOS version that is supposed to resolve the AHCI boot issue on BIOS 1.2.3. I'm going to give it a shot later tonight with the most recent BIOS.UPDATE: I also found which reports that the system will not boot at all in AHCI using BIOS 1.2.3, which is pretty alarming. However, it's not certain whether this is limited to certain brands of NVMe drives, or if all are affected.I picked up a refurbished XPS 13 (9360) and am planning to set up dual boot Windows 10 /, but according to, I have to switch the SATA operation mode from RAID (default) to AHCI. This causes the existing Windows image to become inoperable since it was installed under RAID by Dell.OK, that's not a problem since it's a fresh install anyway, so I make a bootable USB from an ISO straight from Microsoft using Rufus, and discover that the NVMe drive doesn't show up in the list of drives that you can install. This is due to it being in RAID, so I do some more reading. After noting the model of my NVMe (Toshiba THNSN5256GPUK) and diving into that topic, I found two possible drivers:.— according to and, I should download the latest IRST package, extract the AHCI drivers, and load them during the Windows install.(scroll down to H) — according to, these drivers work for the older Toshiba THNSN5256GPU7 and I'm reading that they will not work for my drive.So before I switch over to AHCI and destroy the factory Windows 10 image, I have some questions:.Do I even need to install AHCI drivers?
If so, which one is recommended? According to most things I've read, if I go with IRST drivers I should install the ONLY the AHCI drivers and none of the IRST software. But I've also read that Windows 10 includes a native NVMe controller, making 3rd party drivers unnecessary.There are various reports of IRST drivers not working (BSODs, instability, etc.); how true are these?.Any other tips for a clean Windows / Linux install?Edit: just noticed that code brackets make this post really hard to read when not in RES night mode so I've removed them. Thanks for responding. I figured that switching to AHCI would allow the Windows installer to recognize the drive, so my main concern at this point is performance.Some guy in this sub with the PM951 drive and found no noticeable performance difference between RAID and AHCI when it was flashed with a single image, but I have read of some performance drops when using AHCI with improper drivers or the native Win10 controller.There isn't much documentation on my newer Toshiba NVMe so I guess the only thing left to do at this point is experiment and do benchmarks myself using different drivers.