Consider the following scenario. You use a Windows Vista installation disc to install Windows Vista. Additionally, you have media that includes a storage device driver. This storage device driver is certified by Windows Hardware Quality Lab (WHQL). When you install Windows Vista, you use the advanced settings in the Windows Vista Setup program to specify this storage device driver.

In this scenario, the storage device driver that you specified during Windows Vista installation appears to load. However, after the installation of Windows Vista is complete, Windows Vista does not use the driver that you specified. Instead, Windows Vista uses the driver that is included in the Windows Vista installation disc.

When this problem occurs, storage device features are not available in Windows Vista for the driver that you specified during Windows Vista installation. The storage device features are not available even though Windows Vista appears to use the .inf file that corresponds to the storage device driver that you specified during Windows Vista installation.