I have a USB drive (sdb) mounted with UD:   v6.9.1 spins it down correctly but the (substandard) interface returns bad/missing sense data: root@NAS:~# hdparm -y /dev/sdb /dev/sdb: issuing standby command SG_IO: bad/missing sense data, sb[]:  f0 00 01 00 50 40 00 0a 80 00 00 00 00 1d 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00   ...which this line in /usr/local/sbin/sdspin catches and records as an error:   [[ $RET == 0 && ${OUTPUT,,} =~ "bad/mis