Hidden setting to disable SATA port

Hi,

I need to disable a SATA port that has a broken internal SSD drive (soldered to motherboard).

I used AMIBCP to mod the BIOS and enable hidden settings. This allowed me to choose "disabled" for the SATA port that I want. However, this is not working. The drive is still recognized. So, my question is: is there another setting or maybe a security lock in the BIOS that I need to change in order to achieve this?

BIOS is AMI APTIO and modified rom is here: https://jumpshare.com/v/0Hzy7XU2gpLchXv6UoXQ