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Windows 7: Driver for AHCI Gigabyte EP45-UD3P

16 Jun 2009   #1
nate42nd

Windows 7 Professional x64
 
 
Driver for AHCI Gigabyte EP45-UD3P

I have been reading for days and don't understand this. When I get a system built using all SATA drives...is the best setting in the bios AHCI?

I know the RAID setting requires drivers and IDE does not but how about AHCI?

Should I even use this setting? Does it require drivers or does W7 have "generic" ones?

Thanks to anyone who knows.


My System SpecsSystem Spec
.
16 Jun 2009   #2
woebetide

WIN 7 x64
 
 

Win7 has generic driver
Before changing the bios to AHCI, be sure this key in the registry is AHCI enabled
Code:
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\msahci]
"Group"="SCSI Miniport"
"ImagePath"=hex(2):5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\
  74,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,64,00,72,\
  00,69,00,76,00,65,00,72,00,73,00,5c,00,6d,00,73,00,61,00,68,00,63,00,69,00,\
  2e,00,73,00,79,00,73,00,00,00
"ErrorControl"=dword:00000003
"Start"=dword:00000000
"Type"=dword:00000001
"Start"=dword:00000004, then is disabled!
My System SpecsSystem Spec
16 Jun 2009   #3
herzeleid

Windows 7 7232b x64
 
 

I have EP45-DS3R, similar p45+ICH10R mobo. W7 has generic drivers they are installed in the normal setup process. Later you can update p45 chipset drivers and they are updated too. W7 has no problems with the installation since 7057b.
I don't know if it makes any difference AHCI or normal, I used both in different installations. I did not notice anything in performance. A benchmark should be more accurate.
I should try that reg edit and take a look.
My System SpecsSystem Spec
.

16 Jun 2009   #4
nate42nd

Windows 7 Professional x64
 
 

Quote   Quote: Originally Posted by woebetide View Post
Win7 has generic driver
Before changing the bios to AHCI, be sure this key in the registry is AHCI enabled
Code:
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\msahci]
"Group"="SCSI Miniport"
"ImagePath"=hex(2):5c,00,53,00,79,00,73,00,74,00,65,00,6d,00,52,00,6f,00,6f,00,\
  74,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,64,00,72,\
  00,69,00,76,00,65,00,72,00,73,00,5c,00,6d,00,73,00,61,00,68,00,63,00,69,00,\
  2e,00,73,00,79,00,73,00,00,00
"ErrorControl"=dword:00000003
"Start"=dword:00000000
"Type"=dword:00000001
"Start"=dword:00000004, then is disabled!
woebetide, Thanks for the tip. I read a similar workaround in necessary when you don't install the right drivers at install. I wonder if that's what you're talking about????

Quote   Quote: Originally Posted by herzeleid View Post
I have EP45-DS3R, similar p45+ICH10R mobo. W7 has generic drivers they are installed in the normal setup process. Later you can update p45 chipset drivers and they are updated too. W7 has no problems with the installation since 7057b.
I don't know if it makes any difference AHCI or normal, I used both in different installations. I did not notice anything in performance. A benchmark should be more accurate.
I should try that reg edit and take a look.


herzeleid, Thanks very much. I will try the AHCI mode since that's what the computers I have now are set to in the BIOS. I would like to get it done right the 1st time.
My System SpecsSystem Spec
16 Jun 2009   #5
nate42nd

Windows 7 Professional x64
 
 

I just need to know if I need to install the drivers during Windows 7 setup to use AHCI mode.....to make it simple.

I am reading stuff that says yes, and other stuff that says no ? ? ?
My System SpecsSystem Spec
16 Jun 2009   #6
herzeleid

Windows 7 7232b x64
 
 

Quote   Quote: Originally Posted by nate42nd View Post
I just need to know if I need to install the drivers during Windows 7 setup to use AHCI mode.....to make it simple.

I am reading stuff that says yes, and other stuff that says no ? ? ?
You don't need to install any drivers during setup if you are going to install anything newer than 7057 build. Before that I have no idea...

Btw, I tested AHCI and IDE mode using HD Tune. Benchmark results are almost same, in AHCI I can't see the s.m.a.r.t details for hdd.
My System SpecsSystem Spec
16 Jun 2009   #7
nate42nd

Windows 7 Professional x64
 
 

Thanks for the help. I will try just installing with the SATA dvd drive and HDD and see how it goes.
My System SpecsSystem Spec
28 Oct 2009   #8
Qdos

 

Quote   Quote: Originally Posted by herzeleid View Post
You don't need to install any drivers during setup if you are going to install anything newer than 7057 build. Before that I have no idea...

Btw, I tested AHCI and IDE mode using HD Tune. Benchmark results are almost same, in AHCI I can't see the s.m.a.r.t details for hdd.
It's not so on Gigabyte P45 boards. You can load the x64 drivers at Setup/F6, and allow Windows to install, however your BIOS must be set to IDE mode to do this.

If you allow installation to complete and go back into the BIOS when you reboot and select AHCI mode - the result is a board which won't boot.

Any test programs like HD Tune which report virtually no difference in the drive(s) performance in IDE v AHCI mode can't be a very good benchmark test as you don't have NCQ working (or hotswap) in IDE mode, therefore your drive(s) cannot conceivably perform as well.

And if you want to use RAID, well you can't...
My System SpecsSystem Spec
02 Jan 2010   #9
mmgood

Windows 7 Ultimate x64
 
 

i have been screwing around trying to get my other drives to run in AHCI (unknowingly i never set it up when i first installed Win 7) and got the BSOD whenever i changed my Bios to AHCI so kinda gave up until i read this post last night and i just wanna say thank you for the registry work around...set start to 0 and it booted up real nice all my drives are working now...so thanks again woebetide
My System SpecsSystem Spec
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 Driver for AHCI Gigabyte EP45-UD3P




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