How to disable NCQ in Win7 ?

[vishalrao]

Any ideas? Googling basically tells you to change BIOS HDD SATA mode from AHCI to IDE since AHCI has only a few extras like hotplug support and ncq feature...

 

[kekerode]

http://www.techenclave.com/storage-solutions/ide-ahci-raid-how-need-help-149469.html

AHCI sure does give features ... but they make very little use in real life for desktop computing.

 

[vishalrao]

Thanks for the link...

Yea, I made the mistake of enabling AHCI with my new disk. Luckily Win7 appears to automatically detect the (SSD) drive doesnt work well with it and disabled it silently (dont know how to confirm) and in Linux its also easily configurable where I saw an instant speed boost and no more error messages.

Also note, if I change BIOS to IDE then I can still boot into and run/use Win7 no apparent problems. Havent tried Linux yet...

My main goal is to disable NCQ and get best perf....

 

[m0h1t]

Also note, if I change BIOS to IDE then I can still boot into and run/use Win7 no apparent problems. Havent tried Linux yet...

Yes, one can easily switch back to IDE mode if OS is installed w/ AHCI mode, however from what I've read so far jumping from IDE to AHCI is what causes a plethora of issues.

 

[6pack]

i thought NCQ improves performance and cannot be disabled since its controller based.

Native Command Queuing - Wikipedia, the free encyclopedia

In the diagram on this page (wrt ssd drives) NCQ is taken care of by the SATA Controller if i'm not mistaken.

MLC SSDs to Challenge Faster SLC Drives - Tom's Hardware

 

[vishalrao]

yes, check out the MS blog for some explanation: Engineering Windows 7 : Support and Q&A for Solid-State Drives

Other sites suggest that since SSD dont have need for NCQ since they are not mechanically seeking anything which is why linux suggestion is to set "elevator=noop" if you search on that too you will get gyan.

But what surprised me is that Intel has apparently done some sort of proper NCQ support! I have yet to read/learn about it....

 

[harmandeep]

yes, ch.........Engineering Windows 7 : Support and Q&A for Solid-State Drives[/url]

Other sites suggest that since SSD dont have need for NCQ since they are not mechanically seeking anything which is why linux suggestion is to set "elevator=noop" if you search on that too you will get gyan.

B..........to read/learn about it....

Kya baat hai , reversed IDIOT g :hap2: