I don’t really know what you’re talking about. The link you suggested of a “sd card fix” dosnt say anything about, you need to access the advanced startup options, it’s just an alternative option. Did you try first one? Or… just go into system, and deactivate automatic driver installation. Then click on the sd card driver, select go back to old driver. Reboot. This fix though is just for the problem of having a yellow triangle on the driver btw, it’s not about the other problem of the sd card not readable, because of a mechanic issue if you have a too large card.