Reading Sun tapes on 4D/20

[Dave Olson]

There is no way to specify using QIC24 format, the drive
does this automatically.  What may be causing you problems
is that the byte order of the data coming from the drive is
swapped when using the default device.  This decision was
made to be compatible with the 2000/3000 series which had
a byte swapping controller.

To use the non-swapping interface, specify the device as
/dev/tapens.  Alternatively you can fall back on dd and
use conv=swab.  Hope this solves your problem.

By the way, this is documented in the manual page for both
mtio(7) and tps(7).
--
	Dave Olson

It's important to keep an open mind, but not so open
that your brains fall out. -- Stephen A. Kallis, Jr.