在IDE模式下安装Win7后无需重装系统再打开AHCI

在BIOS中设置好了磁盘模式（IDE(Legacy)、AHCI、RAID）之后，安装的系统将在此磁盘模式下运行。如果由一种模式切换到另外一种模式可能会出现开机蓝屏的情况。比如在IDE模式下安装好了Win7，但是后又在BIOS中切换到AHCI，那么就会开机蓝屏。一般的笨办法重装系统。但是此文是无需重装系统把AHCI驱动给安装上。        以本机Lenovo IdeaPad Y450a tsi-(h)为例。此机器的南桥芯片是ICH9M，在IDE模式下，安装Intel Max Storage Manager是无法识别AHCI的。
        首先
        1) 将此文最后的文本拷贝到记事本，保存为.reg文件，让后双击此文件导入注册表。

2)下载Intel Matrix Storage Manager 使用参数 ”-a –a”解压出驱动文件

3) 将驱动文件里面的 “iastor.sys ” 拷贝到 %Windows%\System32\Drivers\

4) 重启系统进入BIOS，打开AHCI

5) 保存并重启进入Windows，这个时候应该能够正常启动。

6) 这个时候Windows系统开机会开始安装AHCI驱动。可以取消掉。双击Intel Maxtri Storage Manager驱动安装包。
        7) 驱动安装完之后重启系统。  
        打完手工！

======================================================
Windows Registry Editor Version 5.00

; --
; traegt einige Betriebsmodi der SATA-AHCI-Hostadapter
; der I/O Controller Hubs
; ICH7R, ICH7-DH, ICH7M-DH
; ICH8R, ICH8-DH, ICH8-DO, ICH8-M, ICH8-ME
; ICH9, ICH9R, ICH9-DH, ICH9-DO
; ICH9-M, ICH9-ME (experimentell)
: ICH10, ICH10R
; der Intel-Chipsaetze
; 955X, 945P, 945G, P965, G965, Q965, Q963
; 945GM, 945PM, 965GM, 965PM
; G31, G33, G35, P31, P35, X38, X48
; G43, G45, P43, P45
; GM45, GM47, PM45
; Q45, P55 (experimentell)
; in die Registry einer Windows-XP-Installation ein
; (XP Home, Professional, x64 Professional Edition).
; --
; Der Treiber IaStor.sys muss man manuell kopieren
; in das Verzeichnis
; %SYSTEMROOT%\system32\drivers\iaStor.sys
; Weitere Tipps: c't 23/05, S. 210
; und
; SATA-AHCI-Treiber nachrüsten:
;
; Weitere Informationen:
; ICH7R: www.intel.com/design/chipsets/datashts/307013.htm
; IaStor.sys:
; Enthalten in Intel Matrix Storage Manager (IMSM), 32- und 64-Bit:
; http://support.intel.com/support/chipsets/imsm/
; Trademarks: Intel (www.intel.com), Microsoft (www.microsoft.com)

; ICH7 AHCI
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_27c1]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH7-M AHCI
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_27c5]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH7 RAID
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_27c3]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH7-M DH RAID
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_27c6]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH8, ICH8R, ICH8-DO, ICH8-DH AHCI 6-Port
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_2821]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH8, ICH8R, ICH8-DO, ICH8-DH AHCI 4-Port
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_2824]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH8, ICH8R, ICH8-DO, ICH8-DH RAID
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_2822]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH8-M, ICH8-ME AHCI
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_2829]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH8-M RAID
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_282A]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH9, ICH9R, ICH9-DO, ICH9-DH AHCI Ports 0-5
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_2922]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH9, ICH9R, ICH9-DO, ICH9-DH AHCI Ports 0, 1, 4, 5
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_2923]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH9R RAID
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_2822]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH9R RAID Alternativ je nach Bit 7 im Register D21:F2:9Ch (siehe Datenblatt)
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_2925]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH9-M, ICH9-ME AHCI
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_2929]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH9-M RAID
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_282A]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH9-M RAID Alternativ je nach Bit 7 im Register D21:F2:9Ch (siehe Datenblatt)
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_292C]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH10, ICH10R AHCI Ports 0-5
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_3A22]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH10R RAID
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_3A25]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH10DO AHCI
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_3A02]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; ICH10DO RAID
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_3A05]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; P55 AHCI Port 0-5
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_3B22]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; P55 AHCI Port 0,1,4,5
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_3B23]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; P55 RAID ist 3A25 wie ICH10R

; P55 Mobile AHCI Port 0-5
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_3B2F]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; P55 Mobile AHCI Port 0,1,4,5
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_3B29]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"

; P55 Mobile RAID
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CriticalDeviceDatabase\pci#ven_8086&dev_3B2C]
"Service"="iaStor"
"ClassGUID"="{4D36E96A-E325-11CE-BFC1-08002BE10318}"


[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor]
"Type"=dword:00000001
"Start"=dword:00000000
"Group"="SCSI miniport"
"ErrorControl"=dword:00000001
"ImagePath"="system32\\drivers\\iaStor.sys"
"tag"=dword:00000019
"DisplayName"="Intel AHCI Controller"

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Parameters]
"AtapiOnPrimary"=dword:ffffffff
"AtapiOnSecondary"=dword:ffffffff

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStor\Enum]

该贴已经同步到 阿木的微博

对于XP64位系统怎么弄呢。

先试试再说、不知道行不行、