def select_card(only_valid=False):
m = Menu()
m.query = "Please Select your Micro SD card"
m.items = []
cards = detect_cards()
if CommandLine.peek_next():
device = CommandLine.get_next()
return filter(lambda card: card.device == device, cards)[0]
for card in cards:
if not only_valid or card.is_created():
m.items.append(MenuItem(card.device, card))
return m.show()
