Dd Copy Cd Input/output Error
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2008, 10:57 PMI bought a DVD Movie (Dark Knight) and I want the iso on my computer. I can play the movie in vlc but when I disk input output error run # dd if=/dev/dvd of=/home/user/Desktop/Bat.iso dd: reading `/dev/dvd': Input/output error 720352+0 records in 720352+0 disk utility input output error records out 368820224 bytes (369 MB) copied, 77.214 s, 4.8 MB/s Since dd is a low-level operation, it makes no sense to disk utility input output error new image me that the DVD plays but dd cannot simply read the 1s and 0s from the dvd. jbrown96December 13th, 2008, 11:02 PMThat's a strange device for your dvd player. Mine is /dev/scd0. Use the same
Disc Utility Input Output Error
device as listed in fstab cat /etc/fstab I can't remember if dd needs the device mounted or umounted, but you should try both ways. You can always try using Brasero; I'm pretty sure it can make iso's. I prefer using command line tools, but it may be easier to go with GUI app. JohnGalt131December 13th, 2008, 11:05 PMThat's a strange device for your dvd player. Mine is /dev/scd0. Use the dd error reading ‘/dev/sr0’ input/output error same device as listed in fstab cat /etc/fstab I can't remember if dd needs the device mounted or umounted, but you should try both ways. You can always try using Brasero; I'm pretty sure it can make iso's. I prefer using command line tools, but it may be easier to go with GUI app. That's the one I tried first. It stopped at the same place (369 MB) Also, brasero was the first method I tried. I have tried mounted and unmounted RolcolDecember 13th, 2008, 11:08 PMIf I remember correctly, that error comes up when you try to duplicate encrypted DVDs. They purposely "corrupt" the data so it cannot be easily copied to reduce piracy. insane_alienDecember 13th, 2008, 11:09 PM/dev/dvd and /dev/scd0 will be the exact same device, just under two different aliases. /dev/scd0 will be the actual device /dev/dvd is mapped to it because its detected that there is a dvd there. jbrown96December 13th, 2008, 11:17 PMIf I remember correctly, that error comes up when you try to duplicate encrypted DVDs. They purposely "corrupt" the data so it cannot be easily copied to reduce piracy. This isn't true. dd makes a bit for bit copy, and encryption doesn't matter. While you won't be able to play the dvd unless
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Dd Error Reading Input/output Error
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Dd Error Reading Dev Cdrom Input Output Error
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 best answers are voted up https://ubuntuforums.org/archive/index.php/t-1010331.html 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 ... That I end up with two http://askubuntu.com/questions/13103/burned-cd-r-are-not-identical-to-the-input-iso-image-why 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 like the most plausible explanation so far. dd share|improve this question edited Dec 26 '
Common F23 Bugs Common F24 Bugs Communicate with Fedora The Documents Bug Reports Fedora Update System (Bodhi) Fedora Build System (Koji) Official Spins FedoraForum.org > Fedora 23/24 > Using Fedora Input/output error when trying http://forums.fedoraforum.org/showthread.php?t=241604 to copy DVD contents with DD FedoraForum Search User Name Remember Me? Password http://hyperlogos.org/page/Recovering-damaged-CDs-or-DVDs-Linux Forgot Password? Join Us! Register All Albums FAQ Today's Posts Search Using Fedora General support for current versions. Ask questions about Fedora that do not belong in any other forum. Google™ Search FedoraForum Search Red Hat Bugzilla Search Search Forums Show Threads Show Posts Tag Search Advanced Search Go to Page... Thread Tools Search output error this Thread Display Modes #1 3rd March 2010, 11:16 PM jonrpick Offline Registered User Join Date: Jun 2008 Posts: 171 Input/output error when trying to copy DVD contents with DD Here's what I'm getting... I even threw some video DVDs at it to make sure it wasn't the disc. Code: [pickens@acer1 Videos]$ dd if=/dev/sr0 of=POTC.iso dd: reading `/dev/sr0': Input/output error 5088+0 records in 5088+0 records out 2605056 bytes input output error (2.6 MB) copied, 1.67727 s, 1.6 MB/s [pickens@acer1 Videos]$ I am getting the same thing on my laptop running Mandriva, oddly enough. Two different drives, two different computers, two different distros and multiple DVDs. What could be the problem?? __________________ Desktop machine: Zotac MiniITX MB / Pentium Dual Core E2200 (Soon to be Core 2 Duo), 4GB RAM, 640GB SATA, nVidia integrated GPU. Fedora 13, adding Mandriva Powerpack and Puppy soon. Netbook: HP Mini 311: 3GB RAM, 160GB SATA. Nvidia ION LE Graphics. XP SP3 and F13...adding Mandriva soon. My avatar is indicative of my attitude... [SIGPIC][/SIGPIC] jonrpick View Public Profile Find all posts by jonrpick #2 3rd March 2010, 11:34 PM Nokia Offline Registered User Join Date: Aug 2006 Location: /dev/realm/{Abba,Carpenters,...stage} Posts: 3,285 DRM protected disc ? __________________ For safer browsing, use OpenDNS nameservers 208.67.222.222 and 208.67.220.220 SELinux User Guide AutoPager Nokia View Public Profile Find all posts by Nokia #3 3rd March 2010, 11:42 PM jonrpick Offline Registered User Join Date: Jun 2008 Posts: 171 Quote: Originally Posted by Nokia DRM protected disc ? I'd say so, yeah... I've never had a problem doing this in the past. But VLC won't even play it, so...doesn't it usually play ANYTHING? Also, I've never kn
optical disc, retrying until they recover every possible file. The leading tool is probably Isobuster, but there are dozens of candidates for the title. There are few automated (or even user-friendly) data recovery tools on Linux or UNIX(tm) platforms, but common tools which are often even included with the core system or which are installable through the official package system are often sufficient for performing this critical task. One particularly frustrating way to lose data is by burning it to an optical disc and storing it. One often attempts to preserve data this way, only to have cheap media or a cheap storage container (especially binders) destroy the disc beyond repair. Sometimes, however, the data around the error (or at least up to it, which is sometimes still better than nothing) may still be readable if you use a tool more complicated than the 'cp' command (or selecting and dragging files in the file manager of your choice.) Copying an entire disc One excellent starting point is to use GNU dd (from GNU coreutils) or other, similarly capable implementations to recover the data on a damaged optical disc (though perhaps not one so damaged as the one on the right.) A handful of the available options are especially helpful. Here's a possibly excessive example command line for copying a whole disc: dd if=/dev/sr0 of=image.iso bs=2048 conv=noerror,notrunc iflag=nonblock dd is an exceptionally useful utility. The GNU dd manpage says of dd that it will "Copy a file, converting and formatting according to the operands." We don't do any conversion, but we do specify some options as to how to go about reading the data: From my first cd-rom drive (if=/dev/sr0) I read to an appropriately named ISO file (of=image.iso). I specify a block size (bs=2048 means 2048 bytes, or 2 KiB) and some options (conv=noerror,notrunc): noerror causes dd to continue after a read error, and notrunc will avoid any automatic truncatio