From owner-freebsd-hackers Tue Sep 24 14:15:27 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4345537B401 for ; Tue, 24 Sep 2002 14:15:25 -0700 (PDT) Received: from priv-edtnes16-hme0.telusplanet.net (defout.telus.net [199.185.220.240]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7069643E4A for ; Tue, 24 Sep 2002 14:15:24 -0700 (PDT) (envelope-from sh@planetquake.com) Received: from dbs ([216.232.29.145]) by priv-edtnes16-hme0.telusplanet.net (InterMail vM.5.01.04.02 201-253-122-122-102-20011128) with SMTP id <20020924211523.HPCE21301.priv-edtnes16-hme0.telusplanet.net@dbs> for ; Tue, 24 Sep 2002 15:15:23 -0600 Message-ID: <003a01c2640f$817cc500$911de8d8@slugabed.org> From: "Sean Hamilton" To: Subject: READ_BIG - ILLEGAL REQUEST at very end of CD Date: Tue, 24 Sep 2002 14:15:27 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Greetings, I'm creating ISO images of CDs as advised by the handbook, like so: # dd if=/dev/acd0c of=blah.iso bs=2k At the very end of many CDs, dd states "acd0: Input/output error" and the kernel says: acd0: READ_BIG - ILLEGAL REQUEST asc=0x64 ascq=0x00 error=0x04 The .iso seems okay (I can make it into a vnode and mount it without trouble.) I can mount the CD and recursively cat every file, so I don't think it's bad media. Is this just an alignment issue, then? READ_BIG expecting 16 blocks or somesuch? Harmless? Is the tail end of my .iso getting thrown away? thanks, sh atapci0: port 0xd800-0xd80f at device 4.1 on pci0 ata0: at 0x1f0 irq 14 on atapci0 ata1: at 0x170 irq 15 on atapci0 atapci1: port 0x8800-0x883f,0x9000-0x9003,0x9400-0x9407,0x9800-0x9803,0xa000-0xa007 mem 0xe4800000-0xe481ffff irq 11 at device 17.0 on pci0 ata2: at 0xa000 on atapci1 ata3: at 0x9400 on atapci1 ad4: 38172MB [77557/16/63] at ata2-master UDMA100 acd0: CD-RW at ata0-master UDMA33 # atacontrol mode 0 Master = UDMA33 /* 40 pin cable. UDMA33 cdrom. */ Slave = ??? # atacontrol mode 1 Master = ??? Slave = ??? # atacontrol mode 2 Master = UDMA100 Slave = ??? # atacontrol mode 3 Master = ??? Slave = ??? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message