筆電DELL E4300開啟AHCI在安裝完WIN7之後

Dell E4300的筆電，SATA若從IRRT轉成AHCI，無法照一般方式完成操作，需多一個更改機碼的動作（步驟3）

1.安裝Intel Rapid Storage Technology(IRST可在Intel的網站下載)，舊名為Intel Matrix Storage Manager.
2.修改機碼HKEY_LOCAL_MACHINE\SYSTEM\ CurrentControlSet\services\msahci\Start，機碼值由3改成0．（如文章最後附的機碼win7ahci.reg內容）或是使用微軟所提供的技術支援（http://support.microsoft.com/kb/922976）．

3.修改機碼，如文章末附的機碼Intel GM45 AHCI.reg內容所示．

4.重新啟動筆電，進入BIOS將SATA由IRRT改成AHCI，按下apply，接著離開BIOS．
5.此時筆電重開機，進入WINDOWS隨即自動安裝AHCI driver，安裝完成再度重開機．
6.安裝driver，重開機二次後，即大功告成．




win7ahci.reg
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Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\msahci]
"Start"=dword:00000000
"Type"=dword:00000001
"ErrorControl"=dword:00000003
"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,00,44,00,52,\
  00,49,00,56,00,45,00,52,00,53,00,5c,00,6d,00,73,00,61,00,68,00,63,00,69,00,\
  2e,00,73,00,79,00,73,00,00,00
"Group"="SCSI Miniport"
"DriverPackageId"="mshdc.inf_x86_neutral_3f3676f4c0e7d884"

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Intel GM45 AHCI.reg
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Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\CriticalDeviceDatabase\PCI#VEN_8086&DEV_2929&CC_0106]
"ClassGUID"="{4d36e96a-e325-11ce-bfc1-08002be10318}"
"Service"="iaStor"
"Security"=hex:01,00,04,90,00,00,00,00,00,00,00,00,00,00,00,00,14,00,00,00,02,\  00,4c,00,03,00,00,00,00,00,14,00,ff,01,1f,00,01,01,00,00,00,00,00,05,12,00,\  00,00,00,00,18,00,ff,01,1f,00,01,02,00,00,00,00,00,05,20,00,00,00,20,02,00,\  00,00,00,18,00,9f,01,12,00,01,02,00,00,00,00,00,05,20,00,00,00,21,02,00,00

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