Copy Dvd Dd Input Output Error
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Dd Copy Protected Dvd
Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute: Sign dd error reading dev cdrom input output error up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Why can't I copy my DVD with dd? up vote 6 down vote favorite 2 I tried dd, ddrescue dvd dd_rescue and ddrescue, all failed. I thought these tools bypass the filesystem and make a bitwise copy. dd is fooled, it finishes but just produces a small file and states it's finished. dd_rescuse and ddrescue are complaining about read errors and are intolerably slow. These tools can copy only a few MB in 10 minutes. Why is this happening, why are these tools failing? AnyDVD makes the disc copyable in a second on a Win7 host. It says that the UDF filesystem is patched, curiously,
Dd Copy Cd
it also says that there are no bad sectors. The whole disc can be copied in 10 minutes. UPDATE: As for the solution, see my similar question on superuser. filesystems backup data-recovery dd dvd share|improve this question edited Feb 28 '12 at 21:07 asked Feb 24 '12 at 11:21 Ali 89141114 add a comment| 4 Answers 4 active oldest votes up vote 10 down vote accepted I think that the simplest answer is that dd, dd_rescue and ddrescue are not designed to defeat copy protection schemes. They make no assumptions about the format of the data and try to maintain the integrity of the whole of the original on disk data. In the case of dd I suspect that it is terminating due to an intentional read error on the disk that is part of the copy protection scheme. It would help to confirm this if you included the commandline output from dd with your question. You may also find some read errors recorded in the dmesg command output. You may get dd to copy more of the file by passing the noerror flag to it on the commandline. However you may find that this just leaves you with corruption in your final image. share|improve this answer answered Feb 24 '12 at 15:00 Richm 2,6141210 Thanks, upvoted. If I bypass the filesystem and do a "bitwise" copy, and replace the read errors with zero bytes, would that still yield a corrupted image? After all I only replace that data with zero
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Dvdbackup
question Anybody can answer The best answers are voted up and rise to the top Copy CD / DVD contents into an iso file up vote 3 down vote favorite 2 The title seems to be self explainatory. I just want a http://unix.stackexchange.com/questions/32564/why-cant-i-copy-my-dvd-with-dd software to do that. I already have Nero linux but i dont think it is capable of doing it. Trying out the command line method I get an Input /Output error though the iso file seems to be fine also adding bs=1024 doesnt help much 10.10 dvd iso cd share|improve this question edited May 17 '12 at 5:44 asked May 16 '12 at 17:01 Ashu 5,16622254 You get the Input/output error due to DRM protection. –Rinzwind May 17 '12 at 6:45 http://askubuntu.com/questions/137966/copy-cd-dvd-contents-into-an-iso-file .... and nero linux -can- make ISOs: file -> Burn CD image –Rinzwind May 17 '12 at 6:47 @Rinzwind will that prevent proper copying? –Ashu May 17 '12 at 6:47 That's what DRM is intended for. You will probably run into trouble if you try to install from it. –Rinzwind May 17 '12 at 6:51 Check dmesg for more detailed errors. And if it is a copy protected video dvd then you will need a program to decrypt and unlock it. –psusi May 17 '12 at 14:00 | show 1 more comment 2 Answers 2 active oldest votes up vote 5 down vote accepted If you feel like going terminal you could try this: dd if=/dev/dvd of=/myiso.iso bs=1024 There are other examples here: http://digitalsanctum.com/2007/01/26/how-to-make-an-iso-image-using-dd/ share|improve this answer edited May 17 '12 at 6:45 Rinzwind 139k16268372 answered May 16 '12 at 17:07 Mordoc 1,641514 the link tells i need to unmount the cd before using the command. unmounting it causes the cd to eject. –Ashu May 16 '12 at 18:14 @Ashu, you don't need to unmount it first. –psusi May 16 '12 at 19:30 adding bs=1024 to the line described above , can speed things up. Since it will be reading the disk in larger chunks –tomodachi May 16 '12 at 20:17 @psusi thanks. the burning gets completed properly but i get an error. edited my question. –Ashu May 17 '12 at 5:36 @tomodachi not much
Member Registered: 2011-02-07 Posts: 74 Input/Output error copying files from CD/DVD Titles explains all: I tried to copy an .avi film file from a data DVD, but an Input/Output error came https://bbs.archlinux.org/viewtopic.php?id=114032 up and I'm unsure what to do next to fix it.Don't know if http://hyperlogos.org/page/Recovering-damaged-CDs-or-DVDs-Linux it is related, just mention it in case, but I also have the same burning problems with Brasero I've read in some threads (process starts but always fails). Offline #2 2011-02-23 14:38:01 Kosmonavt Member Registered: 2010-02-15 Posts: 100 Re: Input/Output error copying files from CD/DVD Try to duplicate your dvd output error via dd. Suppose your DVD drive is /dev/sr0, then you should execute something like dd if=/dev/sr0 of=dvd-image.iso, where dvd-image.iso - name of image file (note that it will be about 4,5 GB large) . If it fails immediately, then looks like disc is badly corrupted. If not, then wait till command completes, and try to mount this image with mount -t udf input output error dvd-image.iso /mnt (/mnt can be replaced with other mountpoint). Sometimes image mounts better than source disc. Offline #3 2011-02-23 15:10:14 karol Archivist Registered: 2009-05-06 Posts: 25,433 Re: Input/Output error copying files from CD/DVD Did the file get copied or not? Sometimes you get I/O error but everything seems fine and the file plays OK. Offline #4 2011-02-24 10:27:52 Daerun Member Registered: 2011-02-07 Posts: 74 Re: Input/Output error copying files from CD/DVD The file gets partially copyed before the error message appears, with a size of like 40MB while every video in the disc is like 300MB. Kosmonavt, it's a data DVD with video files in it, not a film DVD ; also, I can play the videos from the disc normally. Offline #5 2011-02-24 13:30:10 Kosmonavt Member Registered: 2010-02-15 Posts: 100 Re: Input/Output error copying files from CD/DVD Daerun wrote:it's a data DVD with video files in it, not a film DVDDo film DVDs still exist? Haven't seen any for a long time. The method I described works (AFAIK) only for DVDs with data - one time it helped me to read a scratched DVD
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 truncation of the output file. iflag=nonblock sets an "input flag" that causes dd to use non-blocking I/O, which should minimize the impact on your system at the possible expense of sp