Difference between "SATA" and "AHCI" in bios

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Imentet

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May 28, 2014
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Hello

I have three SSDs and one 7200 rmp HD in my PC.

Today I discovered that I must've messed up and restored bios defaults or something before reinstalling windows recently - so I had everything running in IDE mode.

Swapping to AHCI in bios wasn't a problem (motherboard is ASrock 970 Extreme4) - but one drive is acting weird.

In the bios, two of my SSDs (a Kingston and an OCZ agility) are shown as "AHCI". But the third one - a Samsung EVO - is shown as "SATA".

In windows, I checked the drives with AS SSD. Here, the kingston and OCZ are shown as AHCI mode, but the Samsung as still running in IDE mode.

... so I'm kind of confused. According to my motherboard manual, there's no difference between the sata plugs on the mobo.
 
Solution
Choose AHCI for boot drive for better performance.
http://tweaks.com/windows/44119/improve-sata-hard-disk-...
http://www.tomshardware.co.uk/answers/id-2668430/ahci-i...
One drive acting weird probably has some other issue.

Kursun

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Jan 6, 2008
334
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18,860
Choose AHCI for boot drive for better performance.
http://tweaks.com/windows/44119/improve-sata-hard-disk-...
http://www.tomshardware.co.uk/answers/id-2668430/ahci-i...
One drive acting weird probably has some other issue.
 
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