Recovering a medium image

1. Switch the reading strategy.

Go to the Read & Scan preferences dialog and select the adaptive reading strategy.

2. Try to read in as much data as possible into an image file.

Select the drive, image file and error correction file (2a).
The error correction file must be available at this stage so that dvdisaster can determine when enough data for reconstructing the image has been collected.
Start the reading process by clicking at the "Read" button (2b).

Please note that reading a damaged medium may take several hours to complete.

Click on the "Fix" button. It is normal to experience phases of high hard drive activity during image reconstruction.

Additional hints:

• The message "Good! All sectors are repaired." confirms that the medium image has been fully recovered. The repaired image can be handled like an ordinary ". i s o" image. It can be written to a new medium using a suitable CD/DVD recording software.

• If uncorrectable sectors remain after this stage, try reading the image again (some hints for re-reading). dvdisaster will try to re-read only the missing sectors, and this might retrieve enough missing sectors for a successful error correction run.

• The red error graph does not correlate with the spatial arrangement of read errors on the disc: The error correction method is explicitly built to achieve an equal distribution of medium read errors over all error correction blocks.

  The green line marks the maximum capacity of the error correction. If this line is exceeded, the image can not be recovered with the currently available data. In case of tight misses another reading attempt might help.

• When the image has been read in by the adaptive reading strategy, the error correction load will always be maxed out.