From owner-freebsd-current Wed Aug 18 13:15:56 1999 Delivered-To: freebsd-current@freebsd.org Received: from smtprch1.nortel.com (smtprch1.nortelnetworks.com [192.135.215.14]) by hub.freebsd.org (Postfix) with ESMTP id E698D15994 for ; Wed, 18 Aug 1999 13:15:51 -0700 (PDT) (envelope-from atrens@nortelnetworks.com) Received: from zcars01t by smtprch1.nortel.com; Wed, 18 Aug 1999 15:04:01 -0500 Received: from hcarp00g.ca.nortel.com by zcars01t; Wed, 18 Aug 1999 16:11:29 -0400 Received: from hcarp00g.ca.nortel.com (hcarp00g.ca.nortel.com [47.196.31.114]) by hcarp00g.ca.nortel.com (8.9.3/8.7.3) with ESMTP id QAA23227; Wed, 18 Aug 1999 16:13:43 -0400 (EDT) Date: Wed, 18 Aug 1999 16:13:43 -0400 (EDT) From: "Andrew Atrens" Reply-To: "Andrew Atrens" To: Doug Ambrisko Cc: current@freebsd.org Subject: Re: cd writer recommendation? In-Reply-To: <199908181946.MAA57121@whistle.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Wed, 18 Aug 1999, Doug Ambrisko wrote: > I think that most IDE CD-R/CD-RW will just work using Soren's ata driver > in current. I'm doing that on my laptop right now with a hacked pccard and > hacked ata driver. Also I have an external IDE hard disk as well. I do have > a problem with buffer underflows when do a mkisofs to a 4X write over > PCMCIA. 2X works fine. Making your dd blocksize a multiple (say 10) of physical blocksize should cure this. I use something like: AUBLKSIZE=2352 AUWRSIZE=5 AURDSIZE=`expr $AUWRSIZE '*' 2` OBS=`expr $AUBLKSIZE '*' $AUWRSIZE` IBS=`expr $AUBLKSIZE '*' $AURDSIZE` rtprio 5 team -v 1m 5 <$1 | \ rtprio 4 dd ibs=$IBS of=$WORM obs=$OBS conv=osync || exit ymmv, Andrew. -- +-- | Andrew Atrens Nortel Networks, Ottawa, Canada. | | All opinions expressed are my own, not those of any employer. | --+ Heller's Law: The first myth of management is that it exists. Johnson's Corollary: Nobody really knows what is going on anywhere within the organization. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message