Recovered ISOs all corrupted

[a.k.a.]

Dear Alexey,

I deleted a partition, and then needed to recover the contents. No other changes were made to the space. (Of course, I had to manually tell ZAR approximately where to look.) All of the hash values of the original 50+ GB of ISOs are completely off now, and the ISOs won't work in a virtual drive. All the other files work just fine. :(

Nightmare!

I realize that ISOs are delicate matters, but do you have any idea what may have happened in this case? It would be wise to both investigate this problem, and to provide a disclaimer on the product's capabilities.

The other question is, can you offer any advice on forensics tools that may be useful?

Thank you, and I'm sorry for the bleak review. ZAR has done the job for me on every other file format so far.

a.k.a.

[Alexey V. Gubin]

Could you please ZIP and email me the log file,
C:\Program Files\ZAR\logfile.txt
to development@z-a-recovery.com
I need it to try answering about ISOs. And also tell me if they are recovered with the correct size? I mean approximately correct, like, not zero bytes and not cut in halves.

As far as disclaimer is concerned, data recovery is not a guaranteed thing. However, you never know the result without actually trying the recovery. The only disclaimer is like "you go and try, and if it turns out it does not work, we refund your money back". I always thought the money back notice on the order page serves pretty well as the disclaimer. Obviously, when the problem is suspected with our software, we apply certain effort to determine if there really is a bug, or the data is beyond repair (and why). However, this is not always possible.

And I do not have any kind of recommendation regarding forensics as we are not specializing on it. If you have a more specific question, I'd try to answer, but no general advice.