Answer

First, we need to download the tool and driver.

( 1 ) WdHybrid_v1 6.zip – A tool package to disable SSD.
We can see the detail guide and tool package in attachment.

( 2 ) WD Boost Driver – Please download from MSI website as the link below.
GP60 http://www.msi.com/product/nb/GP60.html#download
GP70 http://www.msi.com/product/nb/GP70.html#download

Second, there are 4 steps for installation. Please also check the detail guide [How To Install Windows OS on WD Solid State Hybrid Drive.pdf]
( 1 ) Prepare Applications .
( 2 ) Disable SSD in Win PE mode.
( 3 ) Install Windows OS.
( 4 ) Install WD HyBrid HDD Driver.