Tried this:
1.
Code: Select all
# dd if=/dev/zero of=/dev/sdb
dd: writing to `/dev/sdb': No space left on device
1974272+0 records in
1974271+0 records out
1010826752 bytes (1.0 GB) copied, 180.075 s, 5.6 MB/s
#
sdb1 had not/not-ever/never been mounted [it was unmounted throughout].
2. GParted still shows sdb1 as "unknown" file system.
Attempt to delete partition fails.
Attempt to format fails.