From owner-freebsd-questions@FreeBSD.ORG Fri Aug 27 05:42:24 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 59C1716A4CE for ; Fri, 27 Aug 2004 05:42:24 +0000 (GMT) Received: from ai1.anchorage.mtaonline.net (ai1.anchorage.mtaonline.net [12.21.201.252]) by mx1.FreeBSD.org (Postfix) with ESMTP id C268043D7F for ; Fri, 27 Aug 2004 05:42:22 +0000 (GMT) (envelope-from abc@ai1.anchorage.mtaonline.net) Received: from en26.ai1.anchorage.mtaonline.net (root@faxsrvr [192.168.0.26]) i7R5gIg4079075 for ; Thu, 26 Aug 2004 21:42:18 -0800 (AKDT) (envelope-from abc@ai1.anchorage.mtaonline.net) Received: (from abc@localhost)i7R5hpW3004673; Fri, 27 Aug 2004 05:43:51 GMT (envelope-from abc@ai1.anchorage.mtaonline.net) Date: Fri, 27 Aug 2004 05:43:51 GMT From: abc@ai1.anchorage.mtaonline.net Message-Id: <200408270543.i7R5hpW3004673@en26.ai1.anchorage.mtaonline.net> X-Authentication-Warning: en26.ai1.anchorage.mtaonline.net: abc set sender to abc@ai1.anchorage.mtaonline.net using -f To: "freebsd-questions" X-Mailer: Umail v2.9.7 Subject: burncd + ioctl X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Aug 2004 05:42:24 -0000 FBSD 4.10 CREATIVE CDRW acd0: CD-RW at ata1-master PIO4 after rebooting and power down and spending more time trying to trick the CDRW into doing something, i finally tried: $ burncd -f /dev/acd0 erase file.iso the 'file.iso' seemed to force 'burncd' to do something - eg - make the CD light blink. after hitting up arrow-enter 100x, after a lot of "-1" errors, it finally started to erase. and then it started to work again. i can't make complete sense of it yet, but possibly there are software methods around the glitch of the previous post. another method i had success with a few times was to put a CD with files and a filesystem in the drive, which would mount/list OK, and then 'detach' the CDRW with atacontrol, and then stick a problematic 'from the store' blank in the drive, then 'attach', and then it could be 'erased' with burncd. the best i can figure is, there's something funky about 700MB CDRW media, everyone seems to have a problem with it in a freaky way: RE: PCWorks: 700 MB versus 650 MB CDRW? _________________________________________________________________ * From: Carol Warman * Subject: RE: PCWorks: 700 MB versus 650 MB CDRW? * Date: Sat, 22 Jun 2002 19:27:09 -0700 _________________________________________________________________ Peter: Yes, this was exactly the problem. They were Memorex 700MB discs, right out of a brand new box. The firmware probably needed upgrading to see these discs. The issue was resolved by using Imation 650 MB discs. Thanks so much for the input. Carol Warman Computers Were Us, Inc. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Peter Kaulback Sent: Saturday, June 22, 2002 7:05 PM Subject: RE: PCWorks: 700 MB versus 650 MB CDRW? Some cdrw discs manufactured by Memorex in particular, my burner will not even see. In effect they fail to exist. What drives do you have, they may only need their firmware to be updated. Peter Kaulback In the hour of 11:11 AM 6/22/2002 -0700, Carol Warman spoke this: >Gerry: > >Thanks for the reply and for the valuable links. > >Would you know whether a CD RW drive manufactured 1-2 years ago (the age of >the two machines in question) would have a problem in writing a 700 MB disc? >I'm interested in tracking down the reason that the 650 MB media worked >flawlessly and the 700 MB did not. Any thoughts? > >Thanks. > >Carol Warman >Computers Were Us, Inc. >[EMAIL PROTECTED] >___________________________________________________ > >-----Original Message----- >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On >Behalf Of Gerald E. Boyd >Sent: Saturday, June 22, 2002 8:22 AM >Subject: Re: PCWorks: 700 MB versus 650 MB CDRW? > > >At 07:41 PM 6/21/02 -0700, Carol Warman wrote the following: > > >Could someone please explain the difference (other than the obvious > >capacity) of a 700 MB CDRW versus a 650 MB CDRW. I am asking because we > >helped a client back up his files today and both of his CDRW drives (in two > >separate machines) would not recognize this media. Once we inserted a 650 > >MB CD, both drives recognized the media and the copying worked fine. I am > >used to working with the 650 MB media and the 700 is new to me. > >Early CD drives hold about 74 minutes of audio, or about 650MB of data. >Later models hold about 80 minutes of audio, or about 700MB of data. > >The change came about because of all the audio fans "overburning" the >original CD (circa 1997) to achieve longer play times. Hence, the >manufacturers just started making the newer sizes. > >For more info, see the CD-R FAQ (start at section 7-6) >http://www.cdrfaq.org/faq01.html > >-- >Gerry Boyd