trying to unlock ahci in bios for lenovo h405

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seffzero

seffzero

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Apr 12, 2013
8
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10,510
Just upgraded to a new ssd and would like it to run properly. Sata options in bios are either raid or native. Specs for chipsets indicate the board should support ahci it but it seems lenovo locked it out somehow

as read from cpuZ:
Lenovo H405 desktop
Motherboard LENOVO Tilapia CRB (M3A760M v:1.01 printed on board)
Northbridge AMD 780G
Southbridge AMD SB700
BIOS LENOVO
Version D2KT31AUS

as displayed on boot:
American Megatrends Aptio 4.6.3
version 1.24.115

printed on bios chip:
686
AMIBIOS
C 1999
YY53
5136

I dumped the bios using AFUWINGUI.EXE aptio v3.04.02

I opened the rom in amibcp and yes is selected under show for every option but most do not when you load into the bios, and every Access/use is set to default. When navigating to devices\ata drive setup\onchip sata type the only options are native or raid. If I open the strings tab it does have all the ahci strings as though the options exist but are hidden. I was going to change the access/use and then flash the modded rom but tried a flash of the clean rom I dumped before hand and I simply receive "error 7, bios checksum error" and no flash occurs.

Thanks in advance

originally posted at bios-mods, bios dump can be found there
http://www.bios-mods.com/forum/Thread-Lenovo-h405-ahci-unlock-request
 
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seffzero

seffzero

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Apr 12, 2013
8
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Tried raid mode. Enabled msahci in regedit, rebooted and enabled raid windows wont boot and blue screen. Enabled raid and clean Windows install, still loads controller in ide mode.
 
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seffzero

seffzero

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Apr 12, 2013
8
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Tried drivers from Lenovo amd and micorosoft. If I force the drivers windos won't boot.
 
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GhislainG

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Jul 16, 2008
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I know that Lenovo provide drivers on their site, but did you contact their support? They may be able to help. How did you determine that your SSD operates in IDE mode when the controller is configured in RAID mode? Is performance really that bad? I presume that you're using the drivers found at http://support.amd.com/us/gpudownload/windows/Pages/raid_windows.aspx?
 
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seffzero

seffzero

Honorable
Apr 12, 2013
8
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10,510


Lenovo looked up my system and told me to enable ahci in the bios. When I told them it wasn't there and there are no bios updates they suddenly say my board doesn't support it. I did try those drivers. My main concern is having trim so i don't burn out this expensive drive prematurely.
 
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GhislainG

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Jul 16, 2008
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If RAID is enabled, then TRIM should work if the drive is a non-RAID member (that may not be true on an AMD platform). If Lenovo can't help, the only solution is to get a motherboard that properly supports AHCI. You can't really blame Lenovo as very few people install a SSD in a budget system.
 
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seffzero

seffzero

Honorable
Apr 12, 2013
8
0
10,510


Even with raid enabled and configured as a single drive windows will still only load the ide controller driver so no trim. Time for a new board. Thanks for your input.
 
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seffzero

seffzero

Honorable
Apr 12, 2013
8
0
10,510


I just might since microatx AM3 boards with sataIII, gigabit ethernet and multiple pci express slots are rare. I was considering an 8 core FX but am curious about doing a crossfire with AMD's A series stuff. If I had the dough I'd just run a dual opteron or xeon board and call it good.
 
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GhislainG

Titan
Jul 16, 2008
23,962
5
74,965
Provided the wiring and PSU (probably only 280W) are not an issue, you should be able to fit an ASRock Z77 Extreme4-M (and other similar motherboards) in your case, but I couldn't find an equivalent mATX AMD 990FX motherboard. To install a FX-8350 with 2 PCIe slots suited for Crossfire, you'll most likely have to replace the case and PSU (it probably is not be powerful).

Your options are:
- Replace the motherboard with an inexpensive Intel H77 motherboard, e.g., ASRock H77M and a CPU that draws no more than 77W. Then add an HD 7750 or an HD 7770 GPU and you'll be fine with your 280W PSU.
- Try to find an equivalent AMD solution that supports AHCI and your SSD.
- Sell your Lenovo PC and build a better system from scratch.
 
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