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Author Topic: Problem with sha1 calculation on large files  (Read 6574 times)

Mucci

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Problem with sha1 calculation on large files
« on: 01 July 2018, 09:58 »

Im collecting Switch roms which can be quite large (up to 32GB). I'm adding new roms to a temp folder and scan with CLRMAME. Now I have a lot of files that CLRMAME thinks they are not matching. When I'm doing a checksum verification with another tool the files apprears to match the dat-file.

I think above 9GB is the problem: Could there be a problem with large files that the sha1 calculations are wrong?

can someone confirms that? If you need a file Roman PM me ;-)
thanks a lot
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Roman

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Re: Problem with sha1 calculation on large files
« Reply #1 on: 01 July 2018, 13:53 »

filesize shouldn't be a problem (there are way huger chds etc in MAME which are read/sha1 calculated), however I can double check it.....if I get an example file....and an example datfile
« Last Edit: 01 July 2018, 14:35 by Roman »
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Mucci

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Re: Problem with sha1 calculation on large files
« Reply #2 on: 02 July 2018, 09:12 »

yeah Right ……correct…...but I have no clue what is wrong on my side. Sended you a PM

Thanks a lot
« Last Edit: 02 July 2018, 10:11 by Mucci »
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Roman

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Re: Problem with sha1 calculation on large files
« Reply #3 on: 05 July 2018, 19:45 »

found the problem, fixed the problem.....get the latest nightly
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Mucci

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Re: Problem with sha1 calculation on large files
« Reply #4 on: 06 July 2018, 06:32 »

Scanned my set -> complete

thanks for that :-)
« Last Edit: 06 July 2018, 16:12 by Mucci »
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