Can Windows boot off of Thunderbolt?

[bniu]

I'm considering attaching a 128GB M4 SSD I have to the seagate thunderbolt adapter and I would like to install Windows on it to boot into Bootcamp. Is this doable? Does the computer see thunderbolt devices as basically "internal" since it is just pci express right?

 

[murphychris]

I'm considering attaching a 128GB M4 SSD I have to the seagate thunderbolt adapter and I would like to install Windows on it to boot into Bootcamp. Is this doable? Does the computer see thunderbolt devices as basically "internal" since it is just pci express right?

It's really unclear because this document on page 6 says internal only. Yet I've gotten Linux to boot from external Firewire media on 2008 and 2011 MBPs which clearly is external.

USB definitely isn't working, the device simply vanishes as soon as the CSM-BIOS is loaded. I see no reason why Apple's CSM-BIOS implementation would have been updated to support Thunderbolt, so my expectation is that it's not possible. But there is a way to find out and that's to try it.