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Windows 7: How to Enable AHCI - No option in BIOS.


30 May 2012   #1

Windows 7 Professional x64
 
 
How to Enable AHCI - No option in BIOS.

Hey All,

I'm purchasing a new SSD next week. I've been reading up on it and it looks like I need to enable AHCI in my BIOS. I can't find any option for AHCI though.

I currently have my System setup as RAID0. This was how it was set up in the factory and I haven't changed it.

The only option I have is under SATA operation and I can either set it to "RAID Autodetect/ATA" or "RAID ON".

Is there anyway I can check to see whether AHCI is already enabled? If not will one of the above options enable it?

My System SpecsSystem Spec
.

30 May 2012   #2

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

Some motherboards incorporate AHCI SATA automatically. In the early days of SATA there was a lot of confusion in terminology. "RAID" - "AHCI" - all the same thing.

For your motherboard it looks like you want to choose "RAID Autodetect/ATA" to use a non-RAID setup with AHCI.


Attached Thumbnails
How to Enable AHCI - No option in BIOS.-capture.png  
My System SpecsSystem Spec
30 May 2012   #3

Windows 7 Professional x64
 
 

Thanks TVeblen,

I've read on a few other sites though which say the opposite and say it should be set to "RAID ON" for AHCI, so I'm not sure what to think!

I'd like to have the two spinners still set up as RAID 0 for my data while having my O/S on my SSD. Maybe that isn't possible?
My System SpecsSystem Spec
.


30 May 2012   #4

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

If you want to set up a RAID array then you definitely want to use the RAID ON setting. And you will get AHCI by default (if it is hard coded in your motherboard's BIOS - meaning the board is not so old that it does not do AHCI).

I thought you were trying to set up the SSD without an additional RAID array.
My System SpecsSystem Spec
30 May 2012   #5

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

My System SpecsSystem Spec
30 May 2012   #6

Windows 7 Professional x64
 
 

Quote   Quote: Originally Posted by TVeblen View Post
If you want to set up a RAID array then you definitely want to use the RAID ON setting. And you will get AHCI by default (if it is hard coded in your motherboard's BIOS - meaning the board is not so old that it does not do AHCI).

I thought you were trying to set up the SSD without an additional RAID array.
Sorry TVeblen, I should have been a bit clearer on my inititial post.

Eventually I will replace the two spinners with a larger capacity 2TB single drive.
My System SpecsSystem Spec
30 May 2012   #7

Windows 7 Professional x64
 
 

Quote   Quote: Originally Posted by TVeblen View Post
I hope not otherwise I won't be buying an SSD!
My System SpecsSystem Spec
30 May 2012   #8

Windows 7 Professional x64
 
 

Reply from Dell Support:

"Hi Lee, just confirmed that there is no AHCI option for this model"

Now I'm not sure whether I'm able to use an SSD?
My System SpecsSystem Spec
30 May 2012   #9

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

Like I said - hard to say.

Keep in mind he said that there was no AHCI option in the BIOS.
  • That could mean: "there is no AHCI capability on this system"
  • or: "AHCI is automatic in RAID mode and there is no option to change it"
I can't help with the SSD question. I have not played with one yet .
But I suggest starting a new thread and ask the question directly: "Will a SSD run properly in legacy IDE mode?" Someone here will know.
My System SpecsSystem Spec
30 May 2012   #10

Microsoft Community Contributor Award Recipient

Windows 7 64 Bit Home Premium SP1
 
 

My System SpecsSystem Spec
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 How to Enable AHCI - No option in BIOS.




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