Dumping CD-Rs with Errors in the End Sectors

From Redump Wiki

Many CD-Rs have Errors in their End 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.

Discs affected by this issue typically follow one of two patterns:

• If the affected disc has NO Track A, then there are two errors, in the last 2 sectors of Track 1.
• If the affected disc HAS a Track A, then the last sector (1 sector) of Track 1 has an error, and Track A has errors as well (but Track A is irrelevant for redump purposes).

Steps

• Dump your disc to confirm it is getting c2 errors only at the end of Track 1 (last 1 or 2 sectors).
• Redump the disc, disabling rereads. (redumper may erroneously mis-correct CD-R errors when refining the dump. A correcting of C2 errors at the end sectors of a CD-R should be considered a bad correction.)
• 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

• See this redumper bug report for more details.