The following instruction does allow me to switch from ATA to AHCI properly on my Dell D630 laptop: From D630 SATA DRIVE INSTALLATION FIX – Notebook – Hard Drive – Dell Community Forum: Go to the Lenovo website http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-62909 and download the Intel Matrix driver that they have. Once you have downloaded it navigate to [...]