NAME

mt − TM78/TU-78 MASSBUS magtape interface

SYNTAX

master mt0 at mba? drive ? 
tape mu0 at mt0 slave 0

DESCRIPTION

The tm78/tu-78 combination provides a standard tape drive interface as described in mtio(4). Only 1600 and 6250 bpi are supported; the TU-78 runs at 125 ips and autoloads tapes.

SEE ALSO

mt(1), tar(1), tp(1), mtio(4), tm(4), ts(4), ut(4), dmesg(8)

DIAGNOSTICS

mu%d: no write ring. 
An attempt was made to write on the tape drive when no write ring was present. This message is written on the terminal of the user who tried to access the tape.

mu%d: not online. 
An attempt was made to access the tape while it was offline. This message is written on the terminal of the user who tried to access the tape.

mu%d: can’t switch density in mid-tape. 
An attempt was made to write on a tape at a different density than is already recorded on the tape. This message is written on the terminal of the user who tried to switch the density.

mu%d: hard error bn%d. 
A tape error occurred at block bn.  Any error is fatal on non-raw tape.  When possible the driver will have retried the operation which failed several times before reporting the error.  Additional register information may be gathered from the system error log file, /usr/adm/messages. 

mu%d: blank tape. 
An attempt was made to read a blank tape (a tape without even end-of-file marks).

mu%d: offline. 
During an i/o operation the device was set offline. If a non-raw tape was used in the access it is closed.

RESTRICTIONS

If any non-data error is encountered on non-raw tape, it refuses to do anything more until closed.