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Windows 7: AHCI : Enable in Windows 7 / Vista

07 Feb 2010   #519
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 
AHCI : Enable in Windows 7 / Vista

AHCI : Enable in Windows 7 after OS install

AHCI Advanced Host Controller Interface makes...

My System SpecsSystem Spec
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13 Jul 2013   #520
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Quote   Quote: Originally Posted by TsunamiZ View Post
step 3 ... cilck "Exit"

note, the click is mispelled. great tutorial, though.
Thank you TsunamiZ. Corrected.

My System SpecsSystem Spec
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18 Jul 2013   #521
chamjiee

Windows 7 Ultimate x64 SP1 Dual Boot with Windows Serve 2012 R2
 
 

hi
i have dual boot setup .. windows 7 ultimate x64 with server 2012 r2 preview
now i hvae done all as mentioned above in windows 7.. and successfully booted into win 7 machine . and it installed drivers ..

now before booting into server 2012r2 .. i read an article about ahci on wiki wiki which says

Quote:
On Windows 8 and Windows Server 2012, the name of the controller has changed from msahci to storahci,[4] and the procedure to upgrade to the new controller to it is similar to that of Windows 7.[5] On Windows 8 and Windows Server 2012, changing the SATA mode to AHCI without updating the registry will make the boot drive inaccessible.
so i went to bios changed back to what it used to be earlier adn booted into srever2012 r2 .. and wanted to change it accordingly .. but it is giving me the value of 0 in start variable .? what should i do ?


thanks
My System SpecsSystem Spec
20 Jul 2013   #522
DocDJ

Windows 7 Pro 64-bit
 
 

From all the above discussion, it appears that you can enable AHCI, post-install, and get some benefit from existing SATA drives. Do I *HAVE* to set AHCI on for my drives on the boot following the change to the registry, or can I wait for another re-boot? (I like to do things in small increments to make backout easier.)
My System SpecsSystem Spec
20 Jul 2013   #523
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Hello DocDJ,

It would be best to set AHCI right after making the registry change to avoid any potential issues.
My System SpecsSystem Spec
21 Jul 2013   #524
chamjiee

Windows 7 Ultimate x64 SP1 Dual Boot with Windows Serve 2012 R2
 
 

bump please someone answer post #521
My System SpecsSystem Spec
21 Jul 2013   #525
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Quote   Quote: Originally Posted by chamjiee View Post
hi
i have dual boot setup .. windows 7 ultimate x64 with server 2012 r2 preview
now i hvae done all as mentioned above in windows 7.. and successfully booted into win 7 machine . and it installed drivers ..

now before booting into server 2012r2 .. i read an article about ahci on wiki wiki which says

Quote:
On Windows 8 and Windows Server 2012, the name of the controller has changed from msahci to storahci,[4] and the procedure to upgrade to the new controller to it is similar to that of Windows 7.[5] On Windows 8 and Windows Server 2012, changing the SATA mode to AHCI without updating the registry will make the boot drive inaccessible.
so i went to bios changed back to what it used to be earlier adn booted into srever2012 r2 .. and wanted to change it accordingly .. but it is giving me the value of 0 in start variable .? what should i do ?


thanks
Quote   Quote: Originally Posted by chamjiee View Post
bump please someone answer post #521
Hello Chamjiee,

Sorry for the late reply.

With "Start" set to 0 in the registry of Windows Server 2012, you should be able to boot into Windows Server 2012 with AHCI set in BIOS.

Were you having an issue with Windows Server 2012 not booting with AHCI?

If for some reason Windows Server 2012 doesn't boot, then you could just boot back into your BIOS to set it back to what you had before AHCI to be able to again.
My System SpecsSystem Spec
21 Jul 2013   #526
chamjiee

Windows 7 Ultimate x64 SP1 Dual Boot with Windows Serve 2012 R2
 
 

Quote   Quote: Originally Posted by Brink View Post
Quote   Quote: Originally Posted by chamjiee View Post
hi
i have dual boot setup .. windows 7 ultimate x64 with server 2012 r2 preview
now i hvae done all as mentioned above in windows 7.. and successfully booted into win 7 machine . and it installed drivers ..

now before booting into server 2012r2 .. i read an article about ahci on wiki wiki which says

Quote:
On Windows 8 and Windows Server 2012, the name of the controller has changed from msahci to storahci,[4] and the procedure to upgrade to the new controller to it is similar to that of Windows 7.[5] On Windows 8 and Windows Server 2012, changing the SATA mode to AHCI without updating the registry will make the boot drive inaccessible.
so i went to bios changed back to what it used to be earlier adn booted into srever2012 r2 .. and wanted to change it accordingly .. but it is giving me the value of 0 in start variable .? what should i do ?


thanks
Quote   Quote: Originally Posted by chamjiee View Post
bump please someone answer post #521
Hello Chamjiee,

Sorry for the late reply.

With "Start" set to 0 in the registry of Windows Server 2012, you should be able to boot into Windows Server 2012 with AHCI set in BIOS.

Were you having an issue with Windows Server 2012 not booting with AHCI?

If for some reason Windows Server 2012 doesn't boot, then you could just boot back into your BIOS to set it back to what you had before AHCI to be able to again.

thanks for your kind reply . i havent yet tried booting int server 2012 r2 after setting to ahci in bios.. every time i need to boot into server i reset the setting autodetct raid and when i want to logon to 7 i again reset it ..

quite pesky
thanks will report after i boot into srever
My System SpecsSystem Spec
25 Jul 2013   #527
DocDJ

Windows 7 Pro 64-bit
 
 

Quote   Quote: Originally Posted by Brink View Post
Hello DocDJ,

It would be best to set AHCI right after making the registry change to avoid any potential issues.
I was just about to make the registry change and decided to backup a few files to my IDE CDROM. Seems my IDE port just died (tried new drive & connectors, no go). So replaced it with a SATA DVD drive.

Before I make the AHCI change, I want to know if this will affect the SATA DVD or if the SATA DVD will affect the AHCI setting.

You're not paranoid if they really are out to get you!
My System SpecsSystem Spec
26 Jul 2013   #528
chamjiee

Windows 7 Ultimate x64 SP1 Dual Boot with Windows Serve 2012 R2
 
 

Quote   Quote: Originally Posted by Brink View Post
Quote   Quote: Originally Posted by chamjiee View Post
hi
i have dual boot setup .. windows 7 ultimate x64 with server 2012 r2 preview
now i hvae done all as mentioned above in windows 7.. and successfully booted into win 7 machine . and it installed drivers ..

now before booting into server 2012r2 .. i read an article about ahci on wiki wiki which says

Quote:
On Windows 8 and Windows Server 2012, the name of the controller has changed from msahci to storahci,[4] and the procedure to upgrade to the new controller to it is similar to that of Windows 7.[5] On Windows 8 and Windows Server 2012, changing the SATA mode to AHCI without updating the registry will make the boot drive inaccessible.
so i went to bios changed back to what it used to be earlier adn booted into srever2012 r2 .. and wanted to change it accordingly .. but it is giving me the value of 0 in start variable .? what should i do ?


thanks
Quote   Quote: Originally Posted by chamjiee View Post
bump please someone answer post #521
Hello Chamjiee,

Sorry for the late reply.

With "Start" set to 0 in the registry of Windows Server 2012, you should be able to boot into Windows Server 2012 with AHCI set in BIOS.

Were you having an issue with Windows Server 2012 not booting with AHCI?

If for some reason Windows Server 2012 doesn't boot, then you could just boot back into your BIOS to set it back to what you had before AHCI to be able to again.
hi

With "Start" set to 0 in the registry of Windows Server 2012 R2, you should be able to boot into Windows Server 2012 with AHCI set in BIOS.

i was not able to boot into server 2012r2 ..

what should i do ..
i am posting it from server 2012r2 after defaulted back the ahci settings to what those were earlir ..

i am stuck in going to bios and setting the vale appropriatly each time i log on ..

haaaaaaaaaalp
My System SpecsSystem Spec
26 Jul 2013   #529
Brink
Microsoft MVP

64-bit Windows 8.1 Enterprise
 
 

Chamjiee,

You might just convert Windows 7 back to what you had before that allows you to boot either one without changing this setting.

If you should ever need to reinstall both OSs, then set BIOS to AHCI before installing to have them both using AHCI/SATA afterwards.
My System SpecsSystem Spec
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