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Date:      Fri, 26 Feb 1999 17:54:27 -0800
From:      Josh MacDonald <jmacd@CS.Berkeley.EDU>
To:        freebsd-hackers@freebsd.org
Subject:   SCSI Tape (HP SureStore T20) trouble
Message-ID:  <19990226175427.46545@helen.CS.Berkeley.EDU>

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I just installed a HP SureStore T20 SCSI tape drive on 3.0-RELEASE.
My kernel is configured with the sa0 device, and dmesg reports:

sa0 at ncr0 bus 0 target 5 lun 0
sa0: <HP T20 3.00> Removable Sequential Access SCSI2 device 
sa0: 3.300MB/s transfers

when I boot.  My other SCSI devices have been, and continue to work
just fine.

When I run `mt status' I get 3 lines of console message:

(sa0:ncr0:0:5:0): PREVENT ALLOW MEDIUM REMOVAL. CDB: 1e 0 0 0 1 0 
(sa0:ncr0:0:5:0): ILLEGAL REQUEST asc:20,0
(sa0:ncr0:0:5:0): Invalid command operation code

and the output:

Mode      Density         Blocksize      bpi      Compression
Current:  0x47            512 bytes      0        unsupported
---------available modes---------
0:        0x47            512 bytes      0        unsupported
1:        0x47            512 bytes      0        unsupported
2:        0x47            512 bytes      0        unsupported
3:        0x47            512 bytes      0        unsupported

The density 0x47 is not listed in the mt man page.  It is a minicartridge
format (QIC-3220) with a native capacity of 10GB.  Does anyone know what 
this means?

-josh


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