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Date: Mon, 18 Jun 2018 12:23:03 +0100
From: Frank Leonhardt <freebsd-doc@fjl.co.uk>
To: Freebsd Questions <freebsd-questions@freebsd.org>
Subject: Writing SCSI Medium Auxiliary Memory (MAM)
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You know you can read/write MAM (the "user" memory in tapes or disk 
packs) using "camcontrol attrib" right? Wrong! I assumed you could as I 
use camcontril to read it, but the helpful documentation on the write 
option (-w) says it's not actually implemented. "mt" doesn't know 
anything about it.

So how DO you write new attribute values to MAM?

Thanks, Frank.