Posted in Software Hacks Tagged data, data reconstruction, disk imager, hex editor, ISO Buster, mp3, sd card Post navigation
The rest of the interview was saved, though, and that’s much better than losing the entire thing. Thanks for sending this one in. It’s not perfect – the first fifty seconds of the interview was garbled. By copying a few hundred bytes to the front of the lost file, the file was corrected just enough that an MP3 player could reconstruct the file. That’s not a problem there’s already the header from an MP3 file sitting in a hex editor from the first experiment to see if this was possible. This went into the first available place on the disk, which just happened to be the header of the lost MP3 file.
Because the SD card was plugged into a Mac before, a bunch of data was written on the card. Starting at this address, about 90MB of data was copied into a new hex editor window. Everything works so far great.įor the actual data recovery, a spreadsheet was created to make an educated guess as to where the lost file should be. A good file was found in the hex editor, copied to a new file, and played. The process starts as simply an experiment for hot to create an MP3 file by cutting and pasting bits into a hex editor.
The software required for this feat of data recovery is Roadkil’s Disk Imager to dump all the bits on the SD card to an image file, the free version of ISO Buster to show the block addresses and length of each file, and the hex editor of your choice. You can do it yourself with a hex editor, though, and it’s actually pretty easy. How do you get it back? There are tools that will do it for you, but they cost money. Without pressing that big red Stop button, the file doesn’t close, and you’re left with a very large 0kB file on the SD card. Things go well until one day, you turn the recorder off before stopping the recording.
Also included is our Data Inspector that allows you to quickly edit and view data in decimal, floating point or time and date representations.Let’s say you use an SD card-base portable audio recorder for work – doing an interview, perhaps. Hex Workshop includes a Sector Editor with disk imaging tools, a Base Converter for converting between hex, decimal and binary data types, a Hex Calculator supporting arithmetic and bitwise operations, an expression calculator supporting variables, conditionals, iteration and arithmetic and bitwise operations, and a data visualizer designed to help you visually identify patterns and interesting data from rendered images.
Data editing is quick and easy with our extensive features that allow you to: jump to file or sector location, find or replace data, perform arithmetic, bitwise, and logical operations, binary compare files, generate checksums and digests, view character distributions and export data to RTF or HTML for publishing. You can also work with data in its native structure and data types using our integrated structure viewer and smart bookmarks. With the Hex Workshop, you can edit, cut, copy, paste, insert, fill and delete binary data. Hex Workshop integrates advanced binary editing and data interpretation and visualization with the ease and flexibility of a modern word processor. The Hex Workshop Hex Editor by BreakPoint Software is a complete set of hexadecimal development tools for Microsoft Windows.