diff --git a/dom0/qvm-core/qubesutils.py b/dom0/qvm-core/qubesutils.py index f30e09c1..705baf22 100644 --- a/dom0/qvm-core/qubesutils.py +++ b/dom0/qvm-core/qubesutils.py @@ -167,7 +167,7 @@ def block_find_unused_frontend(vm = None): major = 202 # prefer xvdi for minor in range(8*16,254,16)+range(0,8*16,16): - if str(major << 8 | minor) not in vbd_list: + if vbd_list is None or str(major << 8 | minor) not in vbd_list: return block_devid_to_name(major << 8 | minor) return None