Use FireWire drive connected to thunderbolt display as startup disk

has tried this:
in apple thunderbolt disply, connect bootable firewire drive
connect thunderbolt capable mac display
restart mac after setting firewire drive startup disk or selecting firewire drive startup press option key while mac boots up

work?
if does, how's performance?

 

yes works! boots firewire drive rhat connected in thunderbolt display.

 

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