If you have Bigfile.000, Bigfile.001, Bigfile.002, etc.:
Using 7-Zip (Free, Recommended):
Using HJ-Split (For raw splits without archive headers): Unable To Open Bigfile Bigfile.000
cat Bigfile.000 Bigfile.001 Bigfile.002 > combined_output.bin If you have Bigfile
There are three main culprits for this error, ranked from most common to least common: Using HJ-Split (For raw splits without archive headers):
Based on your diagnosis, apply the appropriate solution.