Mac Pro after replacing the SSD, enable the Achi method under Win7 AHCI

After replacing the SSD under Mac Pro, it is cumbersome to change the SSD to AHCI mode if Win7 is installed. This article describes how to change the SSD in Mac Win7 to AHCI mode driver and the processing of several common problems.

How to change the SSD drive mode of Win7 to AHCI when Lion and Win7 dual system coexist

1.1, enter the Win7 system, modify the registry notification system next boot, loading AHCI driver:

Start menu, run, regedit, enter the following directory:
Hkey_local_machine\system\currentcontrolset\services\msahci
Hkey_local_machine\system\currentcontrolset\services\iastor (may not be)
Hkey_local_machine\system\currentcontrolset\services\iastorv

In the right pane, right-click Start in the Name column, click Modify, type 0 in the Value data box, and then click OK.

1.2, prepare a U disk, enter the lion system of Mac, use Disk utility to format it as "Log" (the first option), name the USB stick "upan", then download patchedcode.rar, unzip, Copy the Patchedcode.bin to the USB stick root directory.

1.3, "If there is no network to restore the system's Mac, please skip this step" to change the network router's DNS to 114.114.114.114 and 8.8.8.8

1.4, enter the network recovery system or with Lion's installation USB drive or CD-ROM boot, enter the installation interface, select "Terminal" to modify the MBR information.

Network Recovery system access method: Restart the machine, hold down the option key, when the disk selection interface, press the "Command+r" key, and then select the router in 3 steps to connect, after a long download (if you do not follow step 3 to DNS, in the country about 2-3 hours to download, After you have changed DNS for about 10 minutes, you can enter the networked recovery system.

After entering the terminal, enter the following command:

cd/volumes/Upan

DD if=/dev/disk0 of=backup.bin bs=512 count=1

(Back up the existing MBR, after running, will display success, you can enter the LS command, to see if a new USB drive directory added a backup.bin file)

Diskutil Umountdisk/dev/disk0

(Uninstall SSD, note: After the carriage return, be sure to see success similar success information, if the show busy can not be uninstalled, need to restart after the terminal to re-perform the uninstallation)

DD If=patchedcode.bin of=/dev/disk0 bs=440 count=1

(The MBR in Patchedcode will be written to the hard drive, after the return, be sure to see the success prompt)

Reboot

After restarting, enter Win7, the system will automatically reload the AHCI driver, and then prompt to restart, reboot once.

Second, when the new SSD is replaced, no lion system, only install Win7, how to enable

2.1, prepare a U disk, will be 1.2 in the Patchedcode.rar download decompression Patchcode.bin put to the root directory of the USB stick, and download the AHCI drive decompression and put it under the U disk.

2.2, first with Win7 CD-ROM installation system, in the installation of Win7 Select a disk or partition, click "Load Driver", browse the--u disk 2.1 in the AHCI-driven directory, the "Show unsigned Driver" tick, select the first driver, and then install the system.

2.3, after the system installation is completed, enter Win7, run regedit, 1.1 of the Registry three keys "start" changed to 0

2.4, restart the computer, follow the steps in 1.3,1.4 to operate.

When the AHCI drive is completed and you enter the Windows 7 system to see that the SSD has changed from the original IDE mode to AHCI mode in Device Manager, we can also download the Intelrst driver to optimize SSD usage to prolong its lifespan.

Third, frequently asked questions

3.1, Win7 under the Bootcamp Control Panel does not open, the "Attempt to access Startup disk settings Error"

Online a lot of posts said, as long as the download of a modified C:\windows\system32\AppleControlPanel.exe replacement can be, but I tried many times, not once successful. After testing, on my computer, because the Intel RST service and Bootcamp conflict caused, simply in the Control Panel-the program, the "Intel Fast Storage Technology" Uninstall, restart the computer, you can open the Bootcamp control Panel.

3.2, Mac start Win7, white screen time is too long

This is because the MAC is caused by the search startup disk, which we can use once, after selecting "Boot Disk" in Win7 's bootcamp control Panel, to significantly reduce the time of white screen. (For Bootcamp Control Panel not open, please refer to 3.1)

3.3, there is no need to install "Intel RST" problem

Many postings on the web say that Intel rst is only useful for multiple disks, that is, when used primarily for a piece of SSD and an HDD, this technology can be used to use SSD as a cache disk, so that the HDD has an SSD almost read and write speed, if there is only one SSD, There is no need to install Intel RST. But I still recommend installing Intel RST, because I retrieved some information, in addition to the raid features, the Intel RST technology can effectively balance the SSD erase, reduce the generation of error data, and effectively extend the life of the SSD. I tested with as SSD benchmark, and when I did not install Intel RST, the score was really about 50 points lower than the Intel RST installed, but the difference in speed was irrelevant compared to the stability and life of the SSD.

3.4. An error occurred during the download of the Networked recovery system

Follow the steps below to reset your Mac's pram.

3.4.1, turn off the computer.
3.4.2, press the four keys simultaneously: Option+command+p+r, then press the power button to boot
3.4.3, press and hold the 4 keys in the 2nd step when the gray screen is turned on, the second reboot of the Mac (it will obviously feel the boot sound is the maximum volume at the factory)
3.4.4, release these keys.

3.5, after resetting the pram, the Mac starts "Pong" sound too big

This voice can not be modified in the Win7, if you want to modify, you need to enter the lion system (if your new SSD only Win7, then please change the original lion's hard drive restart), the system volume is turned down. You can install a software called Startupsound under Lion, and then locate the tool at the bottom of your preferences and set it up. Alternatively, control through Lion's terminal input commands, such as "sudo nvram systemaudiovolume=%80".

Mac Pro after replacing the SSD, enable the Achi method under Win7 AHCI