26 lines
799 B
Plaintext
26 lines
799 B
Plaintext
Mediacheck documentation
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October, 2008
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Mediacheck is a tool we use to test the integrity of ISO images. The
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ISO9660 specification allows for a 512 byte region which is for
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application use. We use it to store a checksum of the ISO image. Of
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couse putting the checksum into this region will change the checksum
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of the final ISO image, so when we verify the checksum later we have
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to fill in this 512 region with the original contents before the
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implantation. It is set to all ASCII 32 decimal spaces.
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If you have a set of ISO images you can implant the checksum data with
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this command:
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implantmd5iso <isoname>
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NOTE: You cannot re-implant an ISO once its been implanted.
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To check a ISO image you can use this command line:
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checkisomd5 <isoname>
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The tools are in the isomd5sum package.
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