As long as you saved a log file, you can restart the recovery from where you left off with the same input, output and log files. Of course, some of the data that was unreadable may have corrupted, but the likelihood is at least some of it won't be - it's worth persevering if you have time to let it run, and then having a look again. The reason you still have the glitches/freezes playing the videos is because you haven't yet recovered the harder-to-read data, so it's missing from the videos. You can have it abort when there is a read error, but because of the above, it's generally not what you want. If you let it run for a while longer, it might start to pull data off the damaged areas of the disk, making your videos more playable - this is why a tool like ddrescue is helpful, primarily. The reason to recover files with corrupted/ unreadable sectors is that ddrescue has a variety of methods of getting unreadable data off disks, but it just takes a long time. What stage did you get to? Are you still on "Copying non-tried blocks"? You could go file by file with ddrescue, but there's not a lot of reasons to do that, because it's more labour intensive than just recovering the whole device/partition, like you have been. Yeah, recovering the data from the damaged areas of the disk is usually slow. Glad you didn't lose any data on your destination drive. You received this question notification because you asked the question. Your question #671230 on DDRescue-GUI changed: On Tuesday, July 31, 2018, 12:22:32 PM EDT, Hamish McIntyre-Bhatty wrote: How a file system keeps track of the mapping data in a file to to the physical location of the blocks on the HDD PFM (**** ******* Magic) I don't know why I would want to recover any file (video or other) that had bad data in it. This of coarse would not work for deleted files, but I' not trying to recover them anyway. Alternatively, if I could run ddrescue at the folder level I could at least recover files in directories with no bad blocks. The file system on Data 4 seems to be intact ( I can see all the folders and enclosed files) I wonder if I could use a script that would access file names and feed them to ddrescue and and have ddrescue automatically abort and go to the next file if it found even one bad block. None of the data on either of these partitions is critical but is desirable. I used 0 retries because I wanted to get as much as possible as fast as possible and I thought that ddrescue would just skip stuff if it ran into bad blocks there by automating the process. I would abort the move and try another (usually at the folder level). I was trying to use ddrecue-GUI to get more because it was very tedious to try to move files when apparently read errors caused the system to hang or go really slow. I suspect that the bad blocks that ddrescue skipped were ones that were in the video file and that no data is just as bad as corrupted dats in a video file. The would go to garbage or freeze using vlc. The original which I can mount and look at with Dolphin and one that is unmountable with an name of Data 3 and a label of Data 4.I let photorec run for a while on sdc3 and it recovered some files, but the recover files (mostly videos) had the same problem as the originals. Some interesting things happened: I now have 2 Data 4's. It started fast and then slowed to a craw so I quit after a few days. I could then format sdc3 and repeat the process for the data on sdb2 (Data 5). The plan was to move the recovered (now good data) to Data 1(sdc1) completing the restore process. I was trying to recover Data 4 (sdb1) to Data 3(sdc3) since I had used Data 1(sdc1) as the target for my move and copy efforts. I purchased a new 3 tb drive and partitioned it into 3 1 tb partitions labeled Data 1 Data 2 and Data 3. When I started seeing performance issues with this Tosheba 2tb drive I ran smartctl -all /dev/sdb which has 2 1tb partitions labeled Data 4 and Data 5 I have recovered a lot of data from Data 4 using Dolphin move and in some case copy when I had mounted the drive read only.
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