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pmqs / Fix-OneDrive-Zip

Fix OneDrive Zip files >4Gig
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bad offset error #11

Open davidelbert opened 2 months ago

davidelbert commented 2 months ago

Hi. Thanks for this invaluable fix! Unfortunately, it is not working for me. I have three zip files created by OneDrive that won't unzip and when I run:

perl fix-onedrive-zip filename1.zip

I get the error:

Error: bad offset 0xBAC696C1 at end of 'filename1.zip'

Apologies if I missed an explanation of this in the ReadMe, but am not sure if there is a way to resolve this.

pmqs commented 2 months ago

Hey David

the Fix-OneDrive-Zip script expects to see a well-formed zip file that has one very specific item of metadata incorrect. Your zip files appear to have a different metadata issue., so it would likely make things worse if my script ignored this problem.

You could try the Strategies for recovering data section in my documentation to see if that helps.

If you are still stuck, and you need assistance, I need to understand more about what is wrong with the zip files. Could you try running another script of mine that dumps the metadata from a zip file. Download a copy of zipdetails and run this

perl zipdetails -v 'filename1.zip

If you have filenames in the zip file you'd rather not share,, include the --redact option, like this

perl zipdetails -v --redact  'filename1.zip

If the script fails, run this instead

perl zipdetails -v --walk  'filename1.zip

Be warned though, if you have a lot of files in these zipfiles the script may take a very long time to run. If the file is enormous, I'm most interested in the output near the end of the file -- post at least everything from the line that has END CENTRAL HEADER to the end of the file.