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92279
March 14th, 2012 10:00
How do I enable AHCI on a Studio 540?
Hello I Recently upgraded my pc's hard drive to a OCZ agility 3 240gb ssd and moved my old HDD as a secondary for storage of music, pics and video files. I Have been reading that using the SSD in AHCI mode will further improve performance of the drive. My question is how do I enable AHCI in the dell bios. the only options im given are SATA and RAID. Is it possible to run AHCI? Any help is appreciated. I have better than average knowledge with pc,s but far from an expert. Thanks
Syatem specs
Intel core 2 quad 8200 2.3 ghz
8GB DDR2
PNY geforce 560ti
OCZ agility 3 240gb Primary
WD caviar black 640 gb secondary
Corsair 600w ps
Windows 7 64bit
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bacillus
2 Intern
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14.4K Posts
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March 15th, 2012 14:00
If your bios supports it, you may find switching to raid (even though you only have a single boot drive) may put you in ahci mode. Before you do the change in bios you have to do a few registry tweaks as just switching the bios setting will get you a bsod when you boot up.
To enable switching between all IDE/AHCI/RAID modes you need to change "Start" Values in these keys to 0
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Msahci\Start
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Pciide\Start
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\iaStorV\Start
Once you make those changes, reboot and set AHCI/raid in the BIOS, save the changes then restart .
Pho_ton
3 Posts
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March 20th, 2012 06:00
Thanks a lot bacillus for that answer. I have the similar question as AJ79. I installed sucessfully an Samsung SSD. But in benchmark it is slow. The SSD works on the Pciide. I could in BIOS not select AHCI. I did not know that RAID and AHCI controller work similar. I will dry this tonight.
I have an XPS 8000 which is about 2,5 years old.
Pho_ton
3 Posts
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March 20th, 2012 06:00
Thanks a lot bacillus for that answer. I have the similar question as AJ79. I installed sucessfully an Samsung SSD. But in benchmark it is slow. The SSD works on the Pciide. I could in BIOS not select AHCI. I did not know that RAID and AHCI controller work similar. I will dry this tonight.
AJ79
10 Posts
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March 20th, 2012 11:00
I also want to Thankyou Bacillus. And I apologize for not responding sooner. I have not ha te time to try and execute your advice but will do so tomorrow. I'll post again to let you know how I make out. Thanks again
Pho_ton
3 Posts
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March 20th, 2012 13:00
I tryed it shortly and been disapointed. The workaround doesn´t work on me. The SSD need to bring in an RAID modus. Otherwise the PC would not boot. Do have to do this? But I already have installed W7 on the SSD,´, Is there no other way to get the AHCI controller get worked?
AJ79
10 Posts
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March 21st, 2012 07:00
Well I gave your advice a try Bacillus and it worked great, system started and booted up with no issues the 2nd registry value was already set to 0 so no changes needed to Be made, and when I ran my ssd tweaker software is showed that ahci was enabled. Thankyou for your help
bacillus
2 Intern
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14.4K Posts
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March 22nd, 2012 14:00
Excellent news... :)
wepland
3 Posts
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April 3rd, 2012 01:00
hi mate,
i rad carefully and follow your advice.
all is good for the registry but i can't find the way to change the bios options AHCI/Raid.My bios is a A9 for dell latitude D430.
thank you for helping
stefek99
1 Message
0
July 27th, 2012 14:00
How do I enable AHCI mode in BIOS?
(search pointed me to this thread and it seems we have similar problem)
jackshack
6.4K Posts
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July 28th, 2012 00:00
AHCI mode is available only to SATA drives. Your D430 uses a special ZIF IDE/ATA hard drive and does not have an AHCI mode.
Bill_Schom
1 Message
0
December 27th, 2019 13:00
Are you sure these are the correct registry keys that need to be set to 0 Gallium? I just searched for them using regedit and I was only able to find the last two. Both of them were already set at 0.
Thanks.