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 PostPost subject: Differences between Daemon Tools and Alcohol 120% MDF images        Posted: Fri May 12, 2017 7:23 pm 
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I tested last week to make MDF images using both Daemon Tools Lite and Alcohol 120%. If the MDF format is supposed to be a RAW format, shouldn't both of these programs make identical MDF files? The test results was that the file size was different using different programs.


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 PostPost subject: Re: Differences between Daemon Tools and Alcohol 120% MDF im        Posted: Sun May 28, 2017 9:52 am 
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well as I know the Media Descriptor File ( aka MDF ) is invented by Alcohol Soft Inc for Alcohol 120% so the format is not publicly documented and/or described so this is the result of my own analyzes.
It seems the creators of MDF, couldn't store bits in exact same order/shape from CD/DVD to HDD. so they don't exactly convert CD/DVD store algorithm into HDD. (or maybe they wanted to save space among conversion)
For this conversion they had to change data block size and other property of stored data and it will led them to place a header on top of it.

as I analyzed the headers is something like this
[total block]
[block size]
[data]
[extra block]
...
[finalizer]

Finally I think it is about default block size and alignment that make your files different.


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