AHCI is disabled for one or more connected SSDs.System must boot in AHCI mode for best performance.?

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qwerty1805

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Jun 28, 2013
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Hi,
I have a Samsung 840 on Asrock 970 extreme 4.
I have the last BIOS, updated the driversand made sure in the bios that AHCI was enabled.
But still samsung magician software shows that AHCI is not activated and I am getting very low preformances with my SSD.
Thank you
 
Solution
clutchc
You aren't by any chance connected to SATA3_5 are you. Changing to AHCI mode is only for SATA3_1 thru 4. To put SATA3_5 and the eSATA port in AHCI mode, you need to enable 'combined mode'. But I recommend keeping the SSD in SATA3_1 thru 4.
Btw, here is a good tutorial for installing the SSD and getting the most out of it. There are a few pitfalls that can cause low speed and wasted space. They are a must: http://www.computing.net/howtos/show/solid-state-drive-ssd-tweaks-for-windows-7/552.html
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clutchc

clutchc

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Apr 22, 2009
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You aren't by any chance connected to SATA3_5 are you. Changing to AHCI mode is only for SATA3_1 thru 4. To put SATA3_5 and the eSATA port in AHCI mode, you need to enable 'combined mode'. But I recommend keeping the SSD in SATA3_1 thru 4.
Btw, here is a good tutorial for installing the SSD and getting the most out of it. There are a few pitfalls that can cause low speed and wasted space. They are a must: http://www.computing.net/howtos/show/solid-state-drive-ssd-tweaks-for-windows-7/552.html
 
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