My laptop is running Manjaro (kernel 5.5). I went to make a 7z archive using the p7zip package. Specifically, my command was

$ 7za a -mmt -mx0 -t7z ARCHIVE.7z Directory/

The source directory was quite large so the archive ended up being ~21GB. Mostly video files from a presentation.

However, when I went to unzip it on another machine, it threw a Header Error (could not open as 7z archive or something along those lines). I attempted to follow the steps for that specific error from the 7zip docs, but all that did was make the OS think the archive was 89MiB, which obviously it is not.

Since I created the archive with Store, I'm hoping there is a way to recover the data. In fact using ghex I was able to see bits and pieces of raw data from various text files in the archive. Any tips on how to go about this? I still have the original broken archive as well, not just the failed 89MiB one.

  • Was the archive transferred via FTP maybe? – Kamil Maciorowski Mar 29 at 21:08
  • @KamilMaciorowski No, I archived it on one machine and put it on an NTFS formatted USB drive. – tycrek Apr 8 at 21:20

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