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  1. #1
    Registered User Cybernaut's Avatar
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    Jun 2007
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    Converting ISO, LBA errors and padding

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    Hi!

    I'm converting my .ISOs to .CSO format. However, it is very common that I get the LBA error when converting. The way I've found around this is by selecting "Use UMD Standard Padding" rather than "Use no extra padding".

    The thing is, I can find no info on what these options really do. Is there any disadvantage to use "standard padding"? To me, the CSOs seems to be of virtually exactly the same size so there seems to be no advantage to use "no padding".

    Also, the LBA error seems to be quite common, and is especially enervating when batch converting. If it can't be easily fixed, a graceful failure, logged message, and proceeding to the next in the queue would be preferable.

  2. #2
    Registered User UMDGen's Avatar
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    UMDGen makes no changes to the the images in batch mode and therefor doesn't verify LBA positions so you shouldn't see any errors of this type in batch mode!

    Padding isn't needed in most cases when rebuilding. Original UMD Discs have padding in the layout to make disc access faster.

  3. #3
    Registered User Cybernaut's Avatar
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    Thank you for the reply.

    Even though you say I shouldn't see any errors of this kind, batch processing do fail frequently without error messages, whereupon all processing cease (even though the program still appears to run). When running a manual conversion ("save as") on the files that fail I get the LBA error, which however generally can be circumvented by selecting "use no extra padding". Thus, you might be right in that batch processing doesn't fail with LBA errors (since no error is displayed) but the files it fails on do all give LBA error in normal conversion mode. Seems more than a coincidence.

    Batch processing unfortunately seems quite unstable, which I am very sad to say, since it is a wonderful feature.

  4. #4
    Registered User UMDGen's Avatar
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    I will add it to the list of 'things to look into'

  5. #5
    Registered User Cybernaut's Avatar
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    Thank you! I will post any further insight I might glean of the Mysteries at hand.

    I hope you will find the issue(s) and that my observations have been of help!

  6. #6
    Registered User Cybernaut's Avatar
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    Jun 2007
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    Rescuing ISOs with bad LBA layout

    Hi!

    I'm still converting my .ISO collection to .CSO and have noticed that there's actually quite a few of my .ISOs that have invalid LBA headers. These can generally not be converted to any other format, and will as a rule (with some few exceptions) not load on my PSP.

    Is there any way of "rescuing" these ISOs? And could perhaps UMDGen be furnished with an automatic (or selectable) "Invalid LBA rescue" mode/function?

    Thanks!

 

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