Reading Dev Scd0 Input Output Error
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Dd: Error Reading ‘/dev/sr0’: Input/output Error
Documentation User Documentation Social Media Facebook Twitter Useful Links Distrowatch Bugs: Ubuntu PPAs: Ubuntu Web Upd8: Ubuntu OMG! Ubuntu Ubuntu Insights Planet Ubuntu Activity Page Please read before SSO login Advanced Search Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Hardware [ubuntu] Input/output error when reading from CD Having an Issue With Posting ? Do you want to help us debug the posting issues ? < is the place to report it, thanks ! Results 1 to 6 of 6 Thread: Input/output error when reading from CD Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode January 26th, 2010 #1 ThomasTC View Profile View Forum Posts Private Message First Cup of Ubuntu Join Date Jan 2008 Beans 8 Input/output error when reading from CD I'm trying to convert an audio CD to an ISO image, but all my attempts run into a brick wall. I'm beginning to suspect that this might be a kernel bug. The following happens on an Intel i7 system, running an up-to-date Ubuntu Karmic, Desktop Edition, 64-bits. My kernel is 2.6.31-16-generic. My DVD-RW drive is: Code: $ sudo lshw -class disk *-cdrom description: DVD-RAM writer product: DVD RW AD-7170A vendor: Optiarc physical id: 0.0.0 bus info: scsi@6:0.0.0 logical name: /dev/cdrom logical name: /dev/cdrw logical name: /dev/dvd logical name: /dev/dvdrw logical name: /dev/scd0 logical name: /dev/sr0 version: 1.O3 serial: [Optiarc DVD RW AD-7170A 1.O3 Jul14,2006 BT-LIG capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram configuration: ansiversion=5 status=ready *-medium physical id: 0 logical name: /dev/cdrom First attempt: Code: $ dd if=/dev/sr0 of=image.iso dd: reading `/dev/sr0': Input/output error 0+0 records in 0+0 records out 0 b
communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Ask Ubuntu Questions Tags Users Badges Unanswered Ask Question _ Ask Ubuntu is a question and answer site for Ubuntu users and developers. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The https://ubuntuforums.org/showthread.php?t=1391249 best answers are voted up and rise to the top Burned CD-R are not identical to the input iso image, why? up vote 5 down vote favorite I have the issue that sometimes when I burn an iso image to a CD-R with: sudo wodim -v driveropts=burnfree -data dev=/dev/scd0 input.iso And then read it back out again with: sudo dd if=/dev/cdrom of=output.iso dd: reading `/dev/cdrom': Input/output error http://askubuntu.com/questions/13103/burned-cd-r-are-not-identical-to-the-input-iso-image-why ... That I end up with two iso images that are not identical, namely the output.iso is missing 2048 bytes at the end. When I however mount the iso image or CD-R and compare the actual files on the mountpoint, both are identical. Is that expected behavior or is that an actually incorrect burn of the data? And if its expected, how can I verify that the burn process was successful? The reason why I ask in the first place is that it seems to be reproducible behavior, certain iso images come out 2048 bytes short, even on repeated burns, but all burned CD-Rs are under themselves identical. Also what is the reason behind the: dd: reading `/dev/cdrom': Input/output error As it happens always, I assume it is normal, but what is the technical reason behind it? I assume CDs don't allow the device to detect the size directly, so dd reads till it encounters the end the hard way. Edit: User karol on superusers.com mentioned that both the size issue and the read error are the result of using -tao (default) in wodim instead of -dao mode. I couldn't yet test it, but it sounds l
Blogs Portal Calendar Easy URPMI Chat MandrivaUsers.org > General Help > Hardware Posting Guidelines View New Content Page 1 of 1 You cannot start a new topic You cannot reply to this topic /mnt/cdrom: Input/output error #1 Guest_Peter_Pugh_* Group: Guests Posted 31 http://mandrivausers.org/index.php?/topic/738-mntcdrom-inputoutput-error/ October 2002 - 12:31 AM Hello, I have posted the following on MandrakeExpert, with very little result. I was hoping maybe someone here may have some ideas. Sorry for the length, but wanted to get a lot of detail included. ----------------------------------------------------------------------------------- Hello, I am new to Linux (Linux Newbie?). Used Unix many years ago -- AT&T on 8086 boxes -- and remember some things, but am trying to catch up. I have output error installed Mandrake 8.2 on an old Dell laptop (Dell Latitude XPi P100SD, 40M, 12GB HD -- yes 12GigaByte, NeoMagic NM2070, 2 Type I PCMCIA slots and a docking port with an Adaptec AIC-6360 SCSI and 3COM 3c509b ethernet; etc.) using a Sony CRX75A PCMCIA CDRW drive as my installation source. Linux sees the CDRW as a Sony CRX700E, but that's close enough for the installation to work. The installation has gone fine. PC dd: error reading working OK, ironed out some problems in Xconfig and NM2070 now working great, at least at 800x600 8bit anyway. My congratulations to Mandrake for a reasonably straight forward installation. Sorry, the details of my problem. Although the installation worked fine, using the CDRW, now the machine is up and running, I can't mount the CD. I have searched google, and found several hits with the same problem, but none of the answers seems to help. The error message I get is "/mnt/cdrom: Input/output error". I have attempted to mount/access the CD as a user and as "root". The following is a much information as I can gather: /etc/mtab File: --------------- /dev/hda1 / ext3 rw,noatime 0 0 none /proc proc rw 0 0 none /dev devfs rw 0 0 none /dev/pts devpts rw,mode=0620 0 0 none /dev/shm tmpfs rw 0 0 /dev/hda10 /home ext3 rw,noatime 0 0 /mnt/cdrom /mnt/cdrom supermount ro,dev=/dev/scd0,fs=iso9660,--,iocharset=iso8859-15 0 0 /mnt/floppy /mnt/floppy supermount rw,sync,dev=/dev/fd0,fs=vfat,--,iocharset=iso8859-15,codepage=850 0 0 /dev/hda7 /root ext3 rw,noatime 0 0 /dev/hda5 /smooth ext3 rw,noatime 0 0 /dev/hda8 /usr ext3 rw,noatime 0 0 /dev/hda9 /var ext3 rw,noatime 0 0 /etc/fstab File: ---------------- /dev/hda1 / ext3 noatime 1 1 none /dev/pts devpts mode=0620 0 0 none /dev/shm tmpfs defaults 0 0 /dev/hda10 /home ext3 noatime 1 2 /mnt/cdrom /mnt/cdrom supermount dev=/dev/scd0,fs=iso9660,ro,--,iocharset=iso8859-15 0