Dd Noerror Input Output Error
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Dd Input/output Error Dvd
the company Business Learn more about hiring developers or posting ads with us Unix & Linux Questions Tags "dd: /dev/rdisk3: input/output error" Users Badges Unanswered Ask Question _ Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only dd conv=noerror takes a minute: Sign 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 Interpreting dd Input/Output error up vote 4 down vote favorite I tried to copy /dev/Storage/Storage (an LV under LVM) to an image file using a dd | pv | dd pipeline. dd reported an
Dd Fails With Input/output Error
error, and I want to know whether dd finished copying my disk or stopped due to the error. I'm not sure since it gave me two different outputs: one with an error at the top and one without. I'd take a guess and say it didn't because between the two there's only an extra 0.1 seconds and no extra data, but I'm not sure if it did or not. /dev/Storage/Storage is a 1 TB disk (terabyte = 1012 = 10004) or 931.51 GiB (gibibyte = 230 = 10243) or 1953513472 sectors. The filesystem on the disk is messed up and doesn't work properly. $ sudo dd if=/dev/Storage/Storage | pv | dd of=Storage.img dd: error reading ‘/dev/Storage/Storage’: Input/output error ] 1627672400+0 records ins] [ <=> ] 1627672400+0 records out 833368268800 bytes (833 GB) copied, 75181 s, 11.1 MB/s 776GB 20:53:01 [10.6MB/s] [ <=> ] 1627672400+0 records in 1627672400+0 records out 833368268800 bytes (833 GB) copied, 75181.1 s, 11.1 MB/s linux dd share|improve this question edited Apr 27 at 15:26 Anthon 47.4k1462125 asked Aug 16 '15 at 0:08 Scoopta 167114 (1) Please show the c
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Dd Skip Errors
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: http://unix.stackexchange.com/questions/223444/interpreting-dd-input-output-error Sign 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 How do I fix an Input/Output error using dd? up vote 6 down vote favorite 3 Hi i'm Trying fixing my Windows 7 system with a broken harddrive, but it's still running. I'm http://askubuntu.com/questions/253117/how-do-i-fix-an-input-output-error-using-dd trying copy all data to a new drive to reinstall Windows 7. Drive called SQSERVICE. I can't copy at all - see below: $ sudo dd if=/dev/sdc1 of=/dev/sda1 dd: reading `/dev/sdc1': Input/output error 11233976+0 records in 11233976+0 records out 5751795712 bytes (5.8 GB) copied, 187.731 s, 30.6 MB/s How to fix this "Input/output error"? hard-drive drive dd share|improve this question edited Feb 9 '13 at 13:32 gertvdijk 37.9k1598171 asked Feb 9 '13 at 13:24 Erazer 31114 1 @Gertvddijk thanks to fix my spelling problem, i'm from netherlands still learning english well. –Erazer Feb 9 '13 at 13:36 add a comment| 2 Answers 2 active oldest votes up vote 8 down vote You said it yourself: your disk is broken. You can try ddrescue, it may be able to work around the broken path. Beware though, that you will lose data. Restoring from backup will be easier :) The correct usage of ddrescue is as follows: sudo apt-get install gddrescue sudo ddrescue /dev/sdc1 /dev/sda1 or if you want to pipe stdout to the proge
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 http://superuser.com/questions/35349/dd-clone-hard-drive-input-output-error-though-chkdsk-says-ok ads with us Super User Questions Tags Users Badges Unanswered Ask Question _ Super User is a http://superuser.com/questions/347916/rescuing-a-hdd-with-bad-sectors-dd-vs-gddrescue question and answer site for computer enthusiasts and power users. 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 and rise to the top dd clone hard drive: Input/Output Error though “chkdsk” says OK up vote 3 down vote favorite 2 I've used dd to clone hard drives before output error using 'dd' and a live cd, but have run into a problem. The issue: dd fails with an "Input/Output Error" on /dev/sda3 , even though windows "check disk" (chkdsk) says it's ok. Context: Trying to replace my laptop hard drive w/ a faster one of the same size Laptop has NTFS on a 320gb hard drive Booting into knoppix Knoppix recognizes 'original' drive(/dev/sda) I am using a usb connection for ‘new' drive (irrelevant, but just an fyi) Knoppix recognizes the usb drive as input output error /dev/sdb Using dd, as follows: dd if=/dev/sda of=/dev/sdb `dd gives the I/O error above at 82Gb (out of 320Gb) I then tried checking each partition as follows and found it failed on /dev/sda3: dd if=/dev/sda1 of=/dev/null dd if=/dev/sda2 of=/dev/null dd if=/dev/sda3 of=/dev/null I have ran windows xp chkdsk on the offending drive in both "find only" and "find and fix" mode and it reports no errors Question How can I find and fix the error on my original hard drive partition (i.e. /dev/sda3) so that dd reads it successfully? ntfs clone dd share|improve this question edited Jan 13 '14 at 19:52 Thor 3,0051726 asked Sep 3 '09 at 22:55 user31575 1262210 migrated from stackoverflow.com Sep 3 '09 at 23:00 This question came from our site for professional and enthusiast programmers. add a comment| 3 Answers 3 active oldest votes up vote 3 down vote Use ddrescue for that, it's able to read damaged disks. And chkdsk probably won't find the issue because it only does basic checks of filesystem integrity; by default, it won't check all the partition space for read errors caused by damage. share|improve this answer answered Sep 3 '09 at 22:59 Michał Górny 21612 3 The package for ddrescue is gddrescue on ubuntu if that's the livecd you're using. If you just do ddrescue you get dd_rescue which is a different older package. –Col Sep 4 '09 at 8:16 add a comment| up vote 2 down vote I ran into the same problem and my
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 Super User Questions Tags Users Badges Unanswered Ask Question _ Super User is a question and answer site for computer enthusiasts and power users. 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 and rise to the top Rescuing a hdd with bad sectors: dd vs gddrescue up vote 5 down vote favorite 2 Somewhere on the internets I read that gddrescue is superior to dd at least in terms of being able to distinguish between the amount of disk reads performed on a troubled sector. Is this really the case? time dd if=/dev/sda skip=900343967 of=a.bin count=4 iflag=direct conv=noerror,sync dd: reading `/dev/sda': Input/output error 2+0 records in 2+0 records out 1024 bytes (1.0 kB) copied, 18.6057 s, 0.1 kB/s 3+1 records in 4+0 records out 2048 bytes (2.0 kB) copied, 18.6707 s, 0.1 kB/s real 0m18.672s user 0m0.000s sys 0m0.004s Btw, the direct flag really helps, w/o it I was only able to read 1 sector out of 4 (vs 3/4 with it). However, that noticeably slows the transfer speed down - it is at least about 5 times slower for me: 5MB/s vs 25MB/s without this flag. Anyhow, now for the gddrescue (ddrescue) part.. time ddrescue -b512 -c1 -s4b -dnvD -i900343967b -o0b /dev/sda b.bin About to copy 2048 Bytes from /dev/sda to b.bin Starting positions: infile = 460976 MB, outfile = 0 B Copy block size: 1 hard blocks Hard block size: 512 bytes Max_retries: 0 Direct: yes Sparse: no Split: no Truncate: no Press Ctrl-C to interrupt rescued: 1536 B, errsize: 512 B, current rate: 53 B/s ipos: 460976 MB, errors: 1, average rate: 53 B/s opos: 1536 B, time from last successful read: 0 s Finished real 0m18.736s user 0m0.004s sys 0m0.000s As shown above, it has taken the exact same amount of time for execution. As expected - same stats: 3/4. However, while I could pad the troubled sectors with 0x00 for dd (conv=sync), gddrescue seems to be missing this functionality? Instead, it