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Reading a defective medium
dvdisaster contains a reading strategy
which is especially suited for reading damaged media:
| 1. |
Insert the medium into the drive. |
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| 2. |
Select the drive. |
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| 3. |
Select the image file name.
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The  symbol opens the file chooser. |
| 4a. |
only when error correction files are used (RS01):
Select the error correction file.
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.
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The  symbol opens the file chooser. |
| 4b. |
only when augmented images are used (RS02):
Choose "ECC/RS02" in the settings so that the correct image size is used for reading.
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| 5. |
Select the adaptive reading strategy.
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| 6. |
Start the reading process by clicking at the "Read" button. |
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| 7. |
Watch the reading progress. |
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If the reading process states that enough data has been collected for a
successful recovery, repair the missing sectors
using the error correction data.
Otherwise, try reading the image
again (some hints for re-reading).
In that case dvdisaster will try to re-read only the missing sectors.
Reading damaged media from the command line
This requires the following parameters (defaults are given in parenthesis):
Example for reading a defective medium using error correction files (RS01):
user@linux> dvdisaster -r --adaptive-read -i image.iso -e corrdata.ecc
dvdisaster-0.70 Copyright 2004-2006 Carsten Gnoerlich.
[... remainder of the GPL announcement ...]
Device: /dev/cdrom, ATAPI DVD+RW 8X4X12 B2K7
Medium: DVD+R, 2224288 sectors, 1 layer(s)
Adaptive reading: Trying to collect enough data for error correction.
Creating new image.iso image.
Repairable: 2.6% (correctable: 0; now reading [0..2224288], size 2224288)
Sectors 57264-57279: Medium Error; Unrecovered read error.
Filling image area [57280..1083504]
[... more descriptions of reading process ...]
Repairable: 100.0% (correctable: 319200; now reading [320304..327065], size 6762)
Sufficient data for reconstructing the image is available.
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Example for reading a defective medium containing an augmented image (RS02):
user@linux> dvdisaster -r --adaptive-read -i image.iso
dvdisaster-0.70 Copyright 2004-2006 Carsten Gnoerlich.
[... remainder of the GPL announcement ...]
Device: /dev/cdrom, ATAPI DVD+RW 8X4X12 B2K7
Medium: DVD+R, 2224288 sectors, Ecc, 1 layer(s)
Adaptive reading: Trying to collect enough data for error correction.
Creating new image.iso image.
Repairable: 2.6% (correctable: 0; now reading [0..2224288], size 2224288)
Sectors 57264-57279: Medium Error; Unrecovered read error.
Filling image area [57280..1083504]
[... more descriptions of reading process ...]
Repairable: 100.0% (correctable: 319200; now reading [320304..327065], size 6762)
Sufficient data for reconstructing the image is available.
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