Dumping CD-Rs with Errors in the Last 2 Sectors

From Redump Wiki

Many CD-Rs have Errors in their Last 2 Sectors due to how the discs were "mastered". These dumps are usually not bad, but require extra steps to ensure QC when adding to redump.

Steps

• Dump your disc to confirm it is getting c2 errors only at the end (last 2 sectors).
• Run the command "redumper split --force-split --image-name=[dump name]" (this will replace the error sectors with 0x55 and create a .bin file).
• Run the command "redumper hash --image-name=[dump name]" (this will add hashes for the .bin to your .log).
• Dump a second time to ensure your .bin has matching hashes.
• Now the .bin info is ready to submit to Redump.
• Copy + paste the link to this guide in your submission the Moderator adding your disc will have context.
• Also include two sets of MPF/redumper logs showing matching results.

Notes

• For discs with a "Track A", there may only be 1 erroneous sector at the end of Track 1.
• redumper may erroneously (mis-)correct CD-R errors when refining the dump. A correcting of C2 errors at the last 2 sectors of a CD-R should be considered a bad correction. Re-reading may need to be disabled in MPF to avoid erroneous corrections.
• See this redumper bug report for more details.