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 Post subject: switching from IDE mode to AHCI mode when installing SSD
PostPosted: Wed Jul 23, 2014 4:29 pm 
8086
8086

Joined: Sun May 02, 2010 4:47 pm
Posts: 24
I recently installed a new SSD and I forgot to go into the bios and change it from IDE to AHCI mode. If I understand things correctly, I am not getting all the throughput that I would be getting in AHCI mode. I also understand that since windows is already installed, I really cannot just go into the bios and change it to AHCI mode. This should have been done before windows was installed. I understand that it is possible to make a registry change now, but I am not about to try that.

Here is my question. Since the change from IDE mode to AHCI mode should have been done before windows was installed, can I just do a clean install of windows again, and make the change to AHCI mode in the bios right before the install? I'm thinking that would work.

Can anyone tell me if that is correct? Thanks. :?


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 Post subject: Re: switching from IDE mode to AHCI mode when installing SSD
PostPosted: Wed Jul 23, 2014 5:05 pm 
Smithfield
Smithfield

Joined: Sun Jun 18, 2006 7:37 pm
Posts: 5396
That's probably the best way to go about this.


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 Post subject: Re: switching from IDE mode to AHCI mode when installing SSD
PostPosted: Wed Jul 23, 2014 5:46 pm 
8086
8086

Joined: Sun May 02, 2010 4:47 pm
Posts: 24
I think so too. Thanks.


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 Post subject: Re: switching from IDE mode to AHCI mode when installing SSD
PostPosted: Wed Jul 23, 2014 6:12 pm 
Coppermine
Coppermine
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Joined: Wed Mar 25, 2009 4:40 pm
Posts: 714
If you haven't gone too far in the installation, then I would recommend just doing a clean install. If, however, you've run all the windows updates and you have your programs installed, Microsoft describes the method to change IDE to ACHI (they also provide a Mr. Fix it but my success has been 50/50 with it).

Neowin has the same method but provides some background.

Hope this helps.


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 Post subject: Re: switching from IDE mode to AHCI mode when installing SSD
PostPosted: Wed Jul 23, 2014 8:17 pm 
8086
8086

Joined: Sun May 02, 2010 4:47 pm
Posts: 24
btdog wrote:
If you haven't gone too far in the installation, then I would recommend just doing a clean install. If, however, you've run all the windows updates and you have your programs installed, Microsoft describes the method to change IDE to ACHI (they also provide a Mr. Fix it but my success has been 50/50 with it).

Neowin has the same method but provides some background.

Hope this helps.



Thanks. I was able to make those changes in the registry and they must have been successful because when I go back into the bios it shows that it is set to AHCI.

Also, my Windows Experience score actually went up from a 7.3 to 7.8 out of 7.9 after making the change. (primary hard disk)

Thanks for the help!


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 Post subject: Re: switching from IDE mode to AHCI mode when installing SSD
PostPosted: Mon Aug 04, 2014 8:30 pm 
Willamette
Willamette

Joined: Tue Feb 01, 2005 12:17 pm
Posts: 1483
Do a clean install because you'll want to install the AHCI drivers during install (the "f6" method where you install the drivers before partition and formatting the drive during the Windows install process). That is the BEST way. I think Gordon (from MaxPC) has published an article or column on how to get around this, but it's still not the same (in my book).


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