12/5/2023 0 Comments Teracopy verify only![]() ![]() In this case, I can copy the files using three other applications without any copy errors. If it was the card reader or anti-virus software, then wouldn't I see errors using all software, not JUST PM? You should get PM 4.5.4 since it fixes bugs that were present in your version.Īs stated in the previous post, I used the EXACT SAME CARD READER and the EXACT same card with the EXACT same contents on that card for ALL transfers. If you have some samples that you can share with me, then please click on my name to the left of this message, then click on the 'personal message' link. What happens if you repeat the Ingest again? Does it still fail on 1% of the images and on the same images, or on different images? If a lot of data is bad then I would suspect the reader or the card as the culprit. If there are just a few random bytes that are incorrect, then I would suspect that your RAM is bad. I would want to compare them with a binary compare to see where the files differ. What I would like to see is two files from you, both being the same file but one of them should be 100% correct and the other should have the errors that you suspect Ingest is causing. My guess would be that either your card is starting to have problems, your reader isn't entirely reliable, or you have some portion of your RAM that is bad. So basically their verification is not entirely reliable anyway. This would slow down Ingest significantly and I can only surmise from your timing comparisons above that Tera Copy, and Downloader Pro do not flush pending writes when they do their verification. Verification is possible, but won't really have any effect unless PM causes the OS to flush all pending writes to the destination drive and then reads the destination files again. Please advise? I love the ingest feature, but if it's not reliable, it's worthless. Downloader Pro also does a verify and copies the files just as fast as PM. Why doesn't PM have a verify option? Tera Copy copies the files almost as fast as PM, but does a checksum verification. When I use Downloader Pro with verify on or off, the files copy 100% fine. When I copy using a third party copy utility called "Tera Copy" which does a verify after copying each file, the files are 100% OK. When I copy the files using Windows copy using the same card and same card reader, the files are 100% intact. ![]() this way I know for sure if the RAW data is intact.) (I like using Capture One since it generates it's own previews based on the RAW data, not the embedded thumbnails. When I use ingest, all the files appear to copy fine, but when I try to access the RAW files in Capture One, Capture one cannot read about 1% of the files. Quote from: darinf on April 16, 2009, 09:28:26 AM I am using PM 4.5.3 on Windows XP sp3 with 4GB of RAM. To my knowledge, however, there are no checksums embedded in the file so the only thing left would be some structural integrity check, but I think what can be done is already done by PM implicitly (e.g, checking some key EXIF fields and adding its own specifics). This would double the ingest time and is still debatable if this would help.Īctually checking the data read would probably be the best option. This is quite a useless step though as writing data to a HD is very very reliable and checking the data just written this way quite superfluous (let alone the fact that chances are the data will be read from the cache anyway).Ī more time-consuming verify could also re-read the data from the card and then check if that was the same. What PM (or any of the other programs) could do, without too big a performance impact, would be to read the just written file and check if the bits are all there. Regarding verification: I wonder what the other programs actually verify, and highly doubt this verification is effective anyway. So all I can suggest now is to (thoroughly) check your card reader and cards. This is really unlikely though as thousands of people use PM without these symptoms… If not, there may be a problem with PM adding its specifics to the files. Have you tried to ingest them with PM a second time too? Were they correct then? If so, I guess there's something wrong with your card reader (and/or OS) that's causing data corruption. If I understand you correctly, you have tried two other methods of copying the same files of the same card, and these are fine. It could be a glitch of the card (reader) or perhaps even the OS (anti virus programs interfering perhaps?).
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