Comment 41 for bug 1396379

A workaround is not relevant because the users that are hit by this bug don't know that they need a workaround until it is too late. I don't remember ever installing Linux and knowing beforehand that I need to apply a workaround to circumvent the installer.
I know I sound like a broken record (see my previous comment here), but the whole point of this bug is that the installer is lying to end-users. It presents an option to choose a boot device and then ignores that choice and severely damages the laptop.

Consider that not all users are highly technical and know how to use gparted or mount, or what are boot flags. All they want is Ubuntu on their usb flash drive. It can cause a great deal of aggravation to fix a bricked laptop (and potential loss of money too). It also definitely reduces those users trust and engagement with Ubuntu.

Personally, I don't think that adding more details to the installer like another warning message is an adequate solution. The solution has to be one of two things:
1) Fix the option to choose boot device correctly
2) or remove this option from the installer completely until you are ready to support it properly.