Thanks for the report. It was missing the flag because it was listing the wrong flags entirely. It was showing the partition flags instead of the disk flags. This patch fixes it.
Phillip Susi (1): Fix help text for disk_{set,toggle} NEWS | 4 ++++ parted/parted.c | 23 +++++++++++++++++++++-- 2 files changed, 25 insertions(+), 2 deletions(-) -- 1.8.3.2