# Copy everything before block 136 dd if=wals_roberta_sets_136.zip of=part1.zip bs=512 count=135 # Copy everything after block 136 dd if=wals_roberta_sets_136.zip of=part2.zip bs=512 skip=136 # Concatenate cat part1.zip part2.zip > clean_136.zip # Try extraction unzip clean_136.zip : This only works if block 136 is an isolated bad sector, not a structural corruption. Method 5: Redownload from Trusted Checksum Often the fastest "fix" is to bypass repair entirely. The Wals Roberta sets usually provide SHA-256 or MD5 checksums. Verify yours:
par2 create wals_roberta_sets.par2 wals_roberta_sets_*.zip If block 136 fails again, run: wals roberta sets 136zip fix
python fix_136zip.py If you know block 136 is exactly 512 bytes starting at offset 0x8800 (typical block size), you can split the archive: Verify yours: par2 create wals_roberta_sets
Run with:
7z rn wals_roberta_sets_136.zip This renames the archive’s internal headers—sometimes bypassing the block 136 corruption. Python can read the archive in raw byte mode, allowing you to skip bad sectors. Create a script fix_136zip.py : wals roberta sets 136zip fix