I have been trying to use ddrescue to make a good copy of a DVD that onlyãworks in some of my DVD players. I actually got it to work with one DVD,ãbut the other one gets so far and then, after several hours, the screenãlooks like this:ãã ***ã# ddrescue -v -b 2048 -r 4 /dev/sr0 D1.iso D1.logãGNU ddrescue 1.23ãAbout to copy 7255 MBytes from '/dev/sr0' to 'D1.iso'ã Starting positions: infile = 0 B, outfile = 0 Bã Copy block size: 32 sectors Initial skip size: 64 sectorsãSector size: 2048 BytesããPress Ctrl-C to interruptã ipos: 4415 MB, non-trimmed: 360116 kB, current rate: 0 B/sã opos: 4415 MB, non-scraped: 0 B, average rate: 79775 B/sãnon-tried: 1716 MB, bad-sector: 0 B, error rate: 8192 B/sã rescued: 5179 MB, bad areas: 0, run time: 18h 2mãpct rescued: 71.37%, read errors: 5569, remaining time: n/aã time since last successful read: 16h 30m 43sãCopying non-tried blocks... Pass 5 (forwards)ã ***ããNote that the last successful read time is over 16 hours. At this point,ãthe numbers in the left column have long since quit incrementing, while theãnumbers (that are not 0) in the other two colums are the only ones going up.ããI have searched on the internet about this. Some folks talk about theirsãgoing days without ever stopping on its own. Others point out thatãsometimes you can CTRL-C out and the iso you get will be mostly OK. Mineãunfortunately was not. :)ããIs there anything I should think about changing on the command line to getãbetter results?ããã * SLMR 2.1a * I am Popeye of Borg. Prepare to be askimilgrated.ãã---ã þ Synchronet þ CAPCITY2 * capcity2.synchro.net * Telnet/SSH:2022/Rlogin/HTTPã

Re: ddrescueã By: Dumas Walker to ALL on Mon Feb 08 2021 03:45 pmãã > I have been trying to use ddrescue to make a good copy of a DVD that onlyã > works in some of my DVD players. I actually got it to work with one DVD,ã > but the other one gets so far and then, after several hours, the screenã > looks like this:ã >ã > ***ããso what is the DVD of? is it something like family movies, or is it something you can download.ããif you can just download it off the internet, i recommend that.ã---ã þ Synchronet þ ::: BBSES.info - free BBS services :::ã

Re: ddrescueã By: Dumas Walker to ALL on Mon Feb 08 2021 03:45 pmãã > I have been trying to use ddrescue to make a good copy of a DVD that onlyã > works in some of my DVD players. I actually got it to work with one DVD,ã > but the other one gets so far and then, after several hours, the screenã > looks like this:ã > ã > ***ã > # ddrescue -v -b 2048 -r 4 /dev/sr0 D1.iso D1.logã > GNU ddrescue 1.23ã > About to copy 7255 MBytes from '/dev/sr0' to 'D1.iso'ã > Starting positions: infile = 0 B, outfile = 0 Bã > Copy block size: 32 sectors Initial skip size: 64 sectorsã > Sector size: 2048 Bytesã > ã > Press Ctrl-C to interruptã > ipos: 4415 MB, non-trimmed: 360116 kB, current rate: 0 B/sã > opos: 4415 MB, non-scraped: 0 B, average rate: 79775 B/s non-tried: 1716 MB, bad-sector: 0 B,ã > error rate: 8192 B/sã > rescued: 5179 MB, bad areas: 0, run time: 18h 2mã > pct rescued: 71.37%, read errors: 5569, remaining time: n/aã > time since last successful read: 16h 30m 43s Copying non-tried blocks... Pass 5 (forwards)ã > ***ã > ã > Note that the last successful read time is over 16 hours. At this point,ã > the numbers in the left column have long since quit incrementing, while the numbers (that are not 0) in the other two columsã > are the only ones going up.ã > ã > I have searched on the internet about this. Some folks talk about theirsã > going days without ever stopping on its own. Others point out thatã > sometimes you can CTRL-C out and the iso you get will be mostly OK. Mine unfortunately was not. :)ã > ã > Is there anything I should think about changing on the command line to get better results?ã > ã > ã > * SLMR 2.1a * I am Popeye of Borg. Prepare to be askimilgrated.ã > ããI don't do a lot of optical media rescuing with ddrescue, but the idea is that you have to perform the reads using multipleãdevices.ããSay you have a bunch of defective sectors. Some optical media reader is capable of reading 33% of them. Another media readerãcan read 50% of them. And another media reader can read 39% of them. Hopefully if you run ddrescue with each reader, and putãthe results together, you can rebuild the whole iso or at least the most of it.ããYou could run a round of reads using the -n switch, which should speed things up quite a bit. Reduce the number of retries tooã- there is no point in trying 4 times for the sector in a first run. You will retrieve less data with each pass, but the thingãis that if 30% of the image is unreadable after the first run you know you can put the DVD into the trash and need waste noãmore time :-)ããã--ãgopher://gopher.richardfalken.com/1/richardfalkenãã---ã þ Synchronet þ Palantir BBS * palantirbbs.ddns.net * Pensacola, FLã

so what is the DVD of? is it something like family movies, or is it somethingã> u can download.ãã> if you can just download it off the internet, i recommend that.ããI might be able to download it, I have not looked. People talk aboutãdownloading things but I am not sure where they find them. It is a DVD Iãbought.ããI need to get smarter about those things. :)ããã * SLMR 2.1a * Photons have mass? I didn't know they were Catholic...ãã---ã þ Synchronet þ CAPCITY2 * capcity2.synchro.net * Telnet/SSH:2022/Rlogin/HTTPã

is that if 30% of the image is unreadable after the first run you know you canã> ut the DVD into the trash and need waste noã> more time :-)ããI had not thought of it that way but I bet you are right. Thanks!ããã * SLMR 2.1a * Trespassers will be shot, survivors will be shot again!ãã---ã þ Synchronet þ CAPCITY2 * capcity2.synchro.net * Telnet/SSH:2022/Rlogin/HTTPã

Arelor wrote to Dumas Walker <=-ãã Ar> @MSGID: <6022532A.385.dove-unix@palantirbbs.ddns.net>ã Ar> @REPLY: <6021A2F5.2616.dove-nix@capitolcityonline.net>ã Ar> Re: ddrescueã Ar> By: Dumas Walker to ALL onã Ar> Mon Feb 08 2021 03:45 pmãã > I have been trying to use ddrescue to make a good copy of a DVD that onlyã > works in some of my DVD players. I actually got it to work with one DVD,ã > but the other one gets so far and then, after several hours, the screenã > looks like this:ã >ã > ***ã > # ddrescue -v -b 2048 -r 4 /dev/sr0 D1.iso D1.logã > GNU ddrescue 1.23ã > About to copy 7255 MBytes from '/dev/sr0' to 'D1.iso'ã > Starting positions: infile = 0 B, outfile = 0 Bã > Copy block size: 32 sectors Initial skip size: 64 sectorsã > Sector size: 2048 Bytesã >ã > Press Ctrl-C to interruptã > ipos: 4415 MB, non-trimmed: 360116 kB, current rate: 0 B/sã > opos: 4415 MB, non-scraped: 0 B, average rate: 79775 B/sãnoã Ar> n-tried: 1716 MB, bad-sector: 0 B,ã > error rate: 8192 B/sã > rescued: 5179 MB, bad areas: 0, run time: 18h 2mã > pct rescued: 71.37%, read errors: 5569, remaining time: n/aã > time since last successful read: 16h 30m 43sãCoã Ar> pying non-tried blocks... Pass 5 (forwards)ã > ***ã >ã > Note that the last successful read time is over 16 hours. At this point,ã > the numbers in the left column have long since quit incrementing, while theãnã Ar> umbers (that are not 0) in the other two columsã > are the only ones going up.ã >ã > I have searched on the internet about this. Some folks talk about theirsã > going days without ever stopping on its own. Others point out thatã > sometimes you can CTRL-C out and the iso you get will be mostly OK. Mineãunfã Ar> ortunately was not. :)ã >ã > Is there anything I should think about changing on the command line to getãbeã Ar> tter results?ã >ã >ã > * SLMR 2.1a * I am Popeye of Borg. Prepare to be askimilgrated.ã >ãã Ar> I don't do a lot of optical media rescuing with ddrescue, but the ideaã Ar> is that you have to perform the reads using multiple devices.ãã Ar> Say you have a bunch of defective sectors. Some optical media reader isã Ar> capable of reading 33% of them. Another media reader can read 50% ofã Ar> them. And another media reader can read 39% of them. Hopefully if youã Ar> run ddrescue with each reader, and put the results together, you canã Ar> rebuild the whole iso or at least the most of it.ãã Ar> You could run a round of reads using the -n switch, which should speedã Ar> things up quite a bit. Reduce the number of retries too - there is noã Ar> point in trying 4 times for the sector in a first run. You willã Ar> retrieve less data with each pass, but the thing is that if 30% of theã Ar> image is unreadable after the first run you know you can put the DVDã Ar> into the trash and need waste no more time :-)ããTrying a different drive will probably help more than using different commandãline switches. IF the problem is degradation of the media, subtle differencesãin the lasers between drives can lead to different results. You mention itãworked on one drive, so do you have someone elses machine you can use? IS theãdisk scratched?ããI have found that some drives might barf on one disk where another doesn't. ãI'd be interested to know how you stick multiple failed ISO's together. Iãfound my Doom 3 CD's (original, not pirate, two of them would fail one myãdesktop, but I was able to read them on my laptop.ããIF the degradation is affecting a portion of the disk (ie, its not just one orãa few sectors), well, unless you can get it working on another drive, itsãlikely gone.ãããã... MultiMail, the new multi-platform, multi-format offline reader!ã--- MultiMail/Linux v0.52ã þ Synchronet þ MS & RD BBs - bbs.mozysswamp.orgã

Re: ddrescueã By: Dumas Walker to MRO on Tue Feb 09 2021 04:10 pmãã > > so what is the DVD of? is it something like family movies, or is itã > > something u can download.ã >ã > > if you can just download it off the internet, i recommend that.ã >ã > I might be able to download it, I have not looked. People talk aboutã > downloading things but I am not sure where they find them. It is a DVD Iã > bought.ã >ã > I need to get smarter about those things. :)ã >ããjust come on my irc or my bbs and msg me and give me your email address. i'll download it for you. there's no use going through all these troubles over a movie.ã---ã þ Synchronet þ ::: BBSES.info - free BBS services :::ã

Re: ddrescueã By: Dumas Walker to ALL on Mon Feb 08 2021 03:45 pmãã DW> I have been trying to use ddrescue to make a good copy of a DVD that onlyã DW> works in some of my DVD players. I actually got it to work with one DVD,ã DW> but the other one gets so far and then, after several hours, the screenã DW> looks like this:ããIf the DVD is scratched and thats why it's having trouble, you might be able to get better results trying to address the physical damage. I've been using some plastic polish that I got off amazon for other things. It works well.ãã---ã þ Synchronet þ [Stupendous BBS - bbs.stupendous.net]ã

I have been trying to use ddrescue to make a good copy of a DVD that onlyã> DW> works in some of my DVD players. I actually got it to work with one DVD,ã> DW> but the other one gets so far and then, after several hours, the screenã> DW> looks like this:ã> If the DVD is scratched and thats why it's having trouble, you might be able tã> get better results trying to address the physical damage. I've been using someã> lastic polish that I got off amazon for other things. It works well.ããIn this case, it was not scratched, but thanks for that info!ããI was able to get just about all of the data off using Handbrake. Seemsãlike the areas having issues were the ones that contained the DVD menu andãsome of the extras. I was able to get most all of what I really wanted offãof it, and I think i can get the rest with youtube-dl. :)ããã * SLMR 2.1a * This message brought to you by JAMMITIN (tm)!!ãã---ã þ Synchronet þ CAPCITY2 * capcity2.synchro.net * Telnet/SSH:2022/Rlogin/HTTPã