Knowing the signature tells you which software to use.
FTK Imager gives a generic "Unable to open bigfile bigfile.000" when adding a raw split image. Unable To Open Bigfile Bigfile.000
If that fails, concatenate the segments first (see Step 4) and then add the single .img file. Knowing the signature tells you which software to use
The error Unable To Open Bigfile Bigfile.000 signifies a fatal I/O failure. In segmented archive systems, Bigfile.000 acts as the header or primary volume. If this file is missing, the operating system cannot locate the subsequent volumes (.001, .002, etc.). Unable To Open Bigfile Bigfile.000