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Date:      Wed, 14 Jul 1999 14:57:11 -0700 (PDT)
From:      asami@freebsd.org (Satoshi - Ports Wraith - Asami)
To:        nisha@cs.berkeley.edu
Cc:        scsi@freebsd.org, nisha@cs.berkeley.edu
Subject:   Re: Question
Message-ID:  <199907142157.OAA15107@silvia.hip.berkeley.edu>
In-Reply-To: <199907142146.OAA16274@saffron.CS.Berkeley.EDU> (message from Nisha Talagala on Wed, 14 Jul 1999 14:46:35 PDT)
References:   <199907142146.OAA16274@saffron.CS.Berkeley.EDU>

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 * I have a Quantum Atlas disk drive that appears to 
 * be doing some form of delayed write optimization.
 * Is there any OS command or mode page change that can
 * turn it off?

You mean to turn off write caching?  I *think* it's the "WCE" (write
cache enable) bit on modepage 8.

You can edit it by the command

  camcontrol modepage -e -m 8 /dev/pass0

(omit the "-e" to just show the values).

Satoshi


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