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– using that text file as a list of search terms to run a “Simultaneous search” with WinHex (in “logical” mode, which scans on a file by file basis within the open volume, deals with fragmented / compressed files, and reports the offset of search hits relative to the beginning of the file, in addition to the absolute offset, and it also allows to exclude irrelevant files, in this case a lot of videos of other types like MKV / MP4, which reduced the size of data to scan to about 1.7TB). – extracting a short sequence of bytes from each file to a text file I'm trying to find a method to match them all, in a reliable and as unattended way as possible.
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Reclaime pro i have recovered file but cant open them iso#
(And the version of R-Studio used then did not indicate if any given “extra found file” was totally included in a file from “Root”, I don't know if it has changed recently, I've read about such a feature somewhere.)Īll files in orange and red on the right side are fragments of MPG and MTS files, and most of them must be a part of files located somewhere on the left side, within ISO DVD images, DVD folders with VOB files, MPG files, MTS / M2TS files (and also some files with no common extension). It gets much more complicated for files like MPG / VOB / MTS, which have numerous headers at regular intervals, and can therefore be extracted as small fragments, depending on which of these intermediate headers are considered as the beginning of a new file by the carving algorithm.
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A duplicate remover like DoubleKiller can detect, for instance, partial duplicates based on the checksum of the first 100KB (for instance). For most file types, it's relatively easy to sort out the mess afterward : the files found by way of “raw” recovery are either exact duplicates of files extracted based on filesystem information, or partial duplicates (if the file was fragmented, or if the carving method adds or removes a small chunk of data at the end), or don't have any matching counterpart (if the corresponding file was no longer referenced as a file record – those are the ones I want to isolate).
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I made a recovery of a 4TB HDD, using both filesystem based recovery, with R-Studio, and so-called “raw” recovery, with R-Studio and Photorec (specifically for MPG files).