Date: Sun, 16 Mar 2003 17:49:30 -0500 From: Paul Lathrop <plathrop@mqtweb.com> To: freebsd-questions@freebsd.org Subject: Making an iso from a data CD Message-ID: <8C55110A-5801-11D7-9BC2-000393BF3DE2@mqtweb.com>
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Greetings, I would like to create an iso image of a data cd. I started by following the directions from the FreeBSD Handbook (section 12.5) and ran the command: dd if=/dev/acd1c of=freebsd_disk1_backup.iso bs=2048 (acd1 is my CD-ROM drive) After about 210MB had copied, I got the following error: acd1: READ_BIG - MEDIUM ERROR asc=0x11 ascq=1x00 error=0x00 dd: /dev/acd1c: Input/output error I tried the same command using the CD burner I have on acd0: dd if=/dev/acd0c of=freebsd_disk1_backup.iso bs=2048 A similar error occurred: acd0: READ_BIG - ILLEGAL REQUEST asc=0x64 ascq-0x00 error=0x04 dd: /dev/acd0c: Input/output error I tried this on several disks (all known-good) and got the same result (at different points on the disk). I'm not sure what I am doing wrong. Relevant configuration info (I hope): acd0: CD-RW <Hewlett-Packard CD Writer Plus 9300> at ata1-master PIO4 acd1: CDROM <Lite-On LTN486 48x Max> at ata1-slave PIO4 uname -a output: FreeBSD ping.mqtweb.com 4.7-RELEASE FreeBSD 4.7-RELEASE #0: Wed Oct 9 15:08:34 GMT 2002 root@builder.freebsdmall.com:/usr/obj/usr/src/sys/GENERIC i386 Any chance someone can shed some light on this for me? Thanks, Paul D. Lathrop To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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