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Is Windows 8 using AHCI On my SSD?Help Please!!!!!!!

post #1 of 6
Thread Starter 
I have already enabled AHCI in BIOS but in my device manager there is no mention of AHCI as you can see in my screenshot
D1BwJyQ.png

So is WINDOWS 8 reallly using AHCI?Thanks in advance for helping
post #2 of 6
Ignore my previous message, that was trim.

Not sure on AMD boards, but if it doesn't mention ahci in device manager, then I'm guessing it's not using AHCI.

Is it definitely set in bios?
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space heater
(29 items)
 
S-HVH-01
(11 items)
 
PfSense
(5 items)
 
CPUMotherboardGraphicsRAM
Intel 2500k 4.7GHz  Asus P8P67 Pro(B3) 2 x Club3D 280X 3GB 16GB g.skill 1600MHz C9 
Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Pro 256GB 4 x 2TB Barracudas in RAID10 2 x WD Blue 1TB RAID0 2 x 3TB Seagate Barracuda 
Hard DriveHard DriveOptical DriveCooling
8 x 146GB HP 10k SAS - various RAID levels RAID Controller LSI 9260-8i 512MB LiteOn IHAS124 Noctua NH-D15 
OSMonitorMonitorMonitor
8.1 Enterprise Acer GD245HQ (120hz) LG W2420P LG IPS231P 
MonitorMonitorKeyboardPower
HP ZR24w LG 32LH3000 (w/IPS) Razer Blackwidow Antec TruePower New 750W 
CaseMouseAudioAudio
Corsair 750D Modified original G5 Asus Xonar PCIe Sennheiser HD595 
AudioAudioAudioAudio
Tannoy Mercury 5 NAD C165BEE Bowers & Wilkins 683 Cambridge Audio DACMagic+ 
CPUCPUMotherboardRAM
Intel® Xeon® Processor E5-2630 v3 (20M Cache, 2... Intel® Xeon® Processor E5-2630 v3 (20M Cache, 2... Lenovo RD650 128GB DDR4 ECC REG 
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OSPowerCase
Windows Hyper-V Server 2012 R2 2 x LiteION 750W 80PLUS Platinum RD650 24x2.5" chassis 
CPURAMHard DriveOS
Intel® Xeon® Processor X5650  8GB ECC 2 x 146GB SCSI RAID1 PfSense 2.2b 
Other
Intel 4 x 1GbE 
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post #3 of 6
If you have AS SSD utility, it will show you exactly which driver is being used.

MSAHCI = microsoft AHCI
iastor.sys = intel ahci driver
post #4 of 6
Thread Starter 
It shows this in AS SSD
post #5 of 6
Thread Starter 
Yup Its DEFINITELY in AHCI in BIOS :/
post #6 of 6
    I've got a computer here that is running AHCI mode, and there is no mention of that fact in Device Manager at all.  It has three controllers in Device Manager (using "View -> Devices by connection" mode):

  1. "NVIDIA nForce Serial ATA Controller" (nvstor32.sys), with two HDDs and a DVD drive connected.
  2. "NVIDIA nForce RAID Controller" (nvrd32.sys), with nothing connected.
  3. "Standard Dual Channel PCI IDE Controller" (atapi.sys), with one PATA HDD connected.

    In Properties for "NVIDIA nForce Serial ATA Controller", it shows that Native Command Queuing (an ACHI only feature) is enabled.  If AHCI is enabled in the BIOS, Windows will have to use it.  That's why people who change the BIOS option after they have installed Windows will usually get a BSOD—Windows is using its generic "IDE only" or "AHCI only" driver to communicate to a controller that is now using a different protocol.  However, a manufacturer-specific (i.e. non Microsoft) driver could easily detect which mode the controller has been set (by the BIOS) to use, and automatically communicate using the correct protocol.  If this is your case, you should switch back and forth between IDE and AHCI mode in the BIOS without any registry tweaks or a BSOD. thumb.gif
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