SCSI
Teac N50 mechanism.
On MacOS 7-9, supported by Retrospect 4.x, but does not appear to version 5.x or higher on MacOS Classic or MacOS X.
Works under Ubuntu 6.06.
Weird mt tell behaviour
The tell command of mt does a WRITE, probably erasing the tape in the process. With the write-protect tab switched ON, you see this is syslog:
$ sudo mt -f /dev/nst0 tell
# /var/log/messages:
Jun 8 08:13:39 tapezilla kernel: [ 846.963127] st0: Error with sense data: <6>st0: Current: sense key: Data Protect
Jun 8 08:13:39 tapezilla kernel: [ 846.963874] Additional sense: No additional sense informationI did this to one of my Maxell CS-600XD tapes before knowing this, and without the write-protect tab being set, and now that tape appears to be blank.