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RESOLVED: Please help me figure out this CD

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Deozaan:
Tried using robocopy and xcopy on the final image but got CRC errors.

But here's another mystery that makes me question whether or not that "final" image is actually the final image:

The 3 images I see show as being about 9-11MB each. The PDF shows as being <1MB. That should be about 30MB total. 40MB being very generous. So why does Windows tell me the CD used up 72MB? Is it possible there are other photos on the CD that aren't being shown to me?

RESOLVED: Please help me figure out this CD

Ath:
So... how can a 700 MB CD have a 1.1 GB partition on it?
-Deozaan (June 07, 2017, 10:38 PM)
--- End quote ---
If it's a compressed volume, backup or encrypted container. You'll have to ask the original source how the disc was created.

Deozaan:
Thanks for the suggestion, Ath.

After trying to figure it out a bit more and getting those CRC errors, I've decided that the CD itself (or just that final image) is corrupted, and I've told the owner to try to get a new, working copy from the original source.

I'm no longer trying to figure out the problem, and no further troubleshooting is required. Thanks to everyone who helped, especially those in IRC who really pitched in with ideas and potential solutions. :Thmbsup:

Shades:
As this topic is tagged as resolved, but isn't closed just yet, here is my contribution for those that need searchable results in the future:

There is quite a lot of software still available that helps you with retrieval of data from damaged CD's, DVDs and BluRay disks.


* IsoBuster  - Their freeware version is one I have used often myself and was very helpful to me, especially after I got a DVD burner from the Netherlands here. Much better device than any of the brands you can get here in Paraguay.
* Roadkil’s Unstoppable Copier  - this one I am familiar with, and would come in handy for retrieval jobs that I could run overnight.
* CD Recovery Toolbox  - Result of a Google search.
* IsoPuzzle  - Result of a Google search.
* CDCheck  - Result of a Google search.
* Dead Disk Doctor  - Result of a Google search.
* Recover Disc  - Result of a Google search.
* Force Copy Beta  - Result of a Google search.
* Copy Cat 3.0  - Result of a Google search.
* AnyReader  - Result of a Google search.
* CD Roller  - Result of a Google search.
Most of these are shareware tools and allow use of a subset from their features after their trail-period ends. But there are some (linked to) freeware items as well.

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