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Windows 7: AHCI : Enable in Windows 7 / Vista

02 Aug 2010   #230
bearcave

Windows 7 Professional 64bit
 
 

Quote   Quote: Originally Posted by Bare Foot Kid View Post
Quote   Quote: Originally Posted by bearcave View Post
Quote   Quote: Originally Posted by Bare Foot Kid View Post
Hello bearcave, welcome to Seven Forums!





If the value in the registry was at ' 0 ' to start with, AHCI was already enabled in Windows.
That's what I had figured,

but why then would it just continually reboot when I set it to AHCI mode in the bios?



Something is out of order, if it's not/wasn't set in the BIOS to AHCI, Windows automatically disables the AHCI drivers during OS install.
Do you have a lot of data to lose if you re-install; just asking.



These are the wrong ones, as far as I know; I haven't used this technology.

Quote:
Matrix Storage manager" and "Rapid Storage Technologies"
Not data loss, all of my data is on a separate partition and everything "music" "documents" just point to that partition and I have the data backed up. It's more the many hours of reinstalling all of my programs and then tweaking things to the way I like them.

I wonder if I went into the registry, disabled the msachi start=3 rebooted and then went it and re-enabled it would that make any difference? or is there something I can do to the hdd drivers that would change them to AHCI mode?


My System SpecsSystem Spec
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02 Aug 2010   #231
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

Can you get to the registry to change the value to find out, at this point, it can't hurt right?
My System SpecsSystem Spec
02 Aug 2010   #232
bearcave

Windows 7 Professional 64bit
 
 

Quote   Quote: Originally Posted by Bare Foot Kid View Post
Can you get to the registry to change the value to find out, at this point, it can't hurt right?
Well i tired it, I went into the registry changed the start value of msachi to 3 rebooted, went back in changed it to 0 shutdown, went into bios enabled achi, and started up. No joy!! I also took off the auto restart and got the standard stop code 0x0000007b.

This is all of the values for msahci in my registry
(default) = value not set
driverpackageid = mshdc.inf_amd64_neutral_a69a58a4286f0b22
errorcontrol = 0x0000003 (3)
group = scsi miniport
imagepath = system32\drivers\msahci.sys
start = 0x000000 (0)
tag = 0x0000040 (64)
type = 0x0000001(1)

There is a sub-folder called Enum
default = value not set
0 = root\legacy_msahci\000
count = 0x0000001 (1)
nextinstance 0x0000001 (1)

I noticed that the driverpackageid says amd64, and i'm running an intel system could this have something to do with it? I have the wrong drivers?
My System SpecsSystem Spec
02 Aug 2010   #233
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

Sorry mate, I'm at the limit of my knowledge here and I have no further suggestions but just for conversation sake, here's a snip of my "Enum" sub-folder, different than yours.


click to enlarge
AHCI : Enable in Windows 7 / Vista-enum.jpg


My System SpecsSystem Spec
.

02 Aug 2010   #234
bearcave

Windows 7 Professional 64bit
 
 

Quote   Quote: Originally Posted by Bare Foot Kid View Post
Sorry mate, I'm at the limit of my knowledge here and I have no further suggestions but just for conversation sake, here's a snip of my "Enum" sub-folder, different than yours.

click to enlarge
Attachment 88991
No worries, I'm at the limit of mine as well. Interesting difference though. is your msachi folder significantly different than mine?
My System SpecsSystem Spec
02 Aug 2010   #235
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

Exactaly the same.
My System SpecsSystem Spec
03 Aug 2010   #236
bearcave

Windows 7 Professional 64bit
 
 

So I ended up breaking down and doing a fresh install with AHCI selected in the bios. I works great. Thanks for all your help.

Funny thing is I did this so I can install Snow Leopard on my other 500gb and dual boot it with windows 7. But I still haven't been able to get snow leopard to install .

Something else to figure out I guess

Thanks again for your help.
My System SpecsSystem Spec
03 Aug 2010   #237
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

Quote   Quote: Originally Posted by bearcave View Post
So I ended up breaking down and doing a fresh install with AHCI selected in the bios. I works great. Thanks for all your help.

Funny thing is I did this so I can install Snow Leopard on my other 500gb and dual boot it with windows 7. But I still haven't been able to get snow leopard to install .

Something else to figure out I guess

Thanks again for your help.




Thank you and thanks for the update.
My System SpecsSystem Spec
06 Aug 2010   #238
bagavan

Windows 8 Professional x64
 
 

I have a normal HDD will there be any performance improvements?
My System SpecsSystem Spec
06 Aug 2010   #239
ZaLiTH

Win 10 x64 Pro x64 / Ubuntu 15.10 x64
 
 

Quote   Quote: Originally Posted by bagavan View Post
I have a normal HDD will there be any performance improvements?
AHCI is a SATA feature, so when you say a 'normal drive', does it use the SATA (Serial ATA - Wikipedia, the free encyclopedia) or IDE (Parallel ATA - Wikipedia, the free encyclopedia) interface to connect to your motherboard?

If it uses SATA you can use it and may notice an improvement, if it uses IDE then you won't be able to make use of this feature.
My System SpecsSystem Spec
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 AHCI : Enable in Windows 7 / Vista




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