I spent my 2 IDE drives in AHCI by modifying the registry (3 instead of 0 to set the generic drivers), reboot and install the Intel Matrix Storage. It works and I can see and access my 2 discs. Here is a problem, I can not format my backup HDD + when I run the backup procedure, Windows 7 disk no longer exists in the list of backup peripherals or backup failure but I can add or delete files on the hard drive. This disk should be 2 or 3 years old so is it would not support the AHCI?
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