Can't find AHCI in bios.. is my mobo too old? Can I flash it?

Meety Peety

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Hey guys, I'll try to keep this short. I bought an SSD and installed Win7 onto it. Shortly after I learned that the bios needs to be set to AHCI before installing Windows, but luckily I found a work around to that with Regedit. The problem is, when I go to bios, I can't find anything about AHCI. I don't even see an option anywhere to go from IDE to RAID or anything.. the only mention of SATA I see is what is connected to each port and that's it.

It's been years since I went into bios but I thought I remembered having a LOT more options in there.. but one option that I did find was "Asus ez flash 2" and I'm wondering if I could update my bios to a newer version that might have more options? I've never done this and have no idea how to do it or if doing so would even accomplish anything.

I'm havin a hard time idenifying the mobo for certain, but I believe it's an Asus P5QL-M-EPU. The computer model was an Asus CM5571. I would guess at least 3 years old, maybe older.

According to "System information" the bios version is American Megatrends Inc 0221 11/3/2009 and SMBIOS version 2.5. I'm sorry if this is not the correct information, I really don't know much about this stuff.

Thanks in advance.
 
Solution
That motherboard has the Intel P43 chipset which definitely has AHCI support. The setting can usually be found in the storage controller or chipset settings. By default it may be set to IDE.

Meety Peety

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I'm glad to know the mobo should support AHCI, but I still can't find the setting in bios. I looked in both areas you mentioned and came up empty. In the storage configuration area the only thing I found was a timer for IDE auto detect and the only option is to change the number of seconds for that feature.
 


It should be under Storage Configuration
 

Meety Peety

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It's not, so does that mean I'm just SOL then? Or is there something I can do to update bios and/or get a version that has the setting I need to change? I've checked every area of this bios, the setting isn't there - I'm not just missing it.
 


It's not immediately obvious.

Storage Configuration -> SATA Configuration -> Enhanced -> Configure SATA As -> AHCI

See page 2-11 of your motherboard manual for better instructions
 

razerg

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I know this is late after 2 years lol but i think i know what you're looking for
AHCI setting you will find under Chipset tab, from there I went to first choice (which is SouthBridge Configuration for me) and then you need to find OnChip SATA Type, under that setting there are choices as Native IDE, RAID, AHCI, Legacy IDE, IDE->AHCI. There, hope i helped :)