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I know The Unarchiver can extract a single ISO file, but how can I extract multipart ISO files?

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.iso are CD-ROM images usually. Can't you just mount them by double clicking? – patrix Sep 28 '11 at 9:26

If they are in fact multipart ISO images (instead of two independent ISO files), you can concatenate them at a Terminal prompt:

cat part1.iso part2.iso >part.iso

I have no idea how to do this from a GUI elegantly. Perhaps wrap that shell command with Applescript?

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