What is the purpose of filesystem.size on a LiveCD?












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There is /casper/filesystem.squashfs on the most LiveCDs of Ubuntu and derivatives that apparently contains the size value of the filesystem tree before compression. Some LiveCD customization articles mention that this file needs to be present in order for the system to boot correctly, but I managed to run a casper-based LiveCD system without it. And grepping through the contents of the casper package I cannot find it either.



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    There is /casper/filesystem.squashfs on the most LiveCDs of Ubuntu and derivatives that apparently contains the size value of the filesystem tree before compression. Some LiveCD customization articles mention that this file needs to be present in order for the system to boot correctly, but I managed to run a casper-based LiveCD system without it. And grepping through the contents of the casper package I cannot find it either.



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      There is /casper/filesystem.squashfs on the most LiveCDs of Ubuntu and derivatives that apparently contains the size value of the filesystem tree before compression. Some LiveCD customization articles mention that this file needs to be present in order for the system to boot correctly, but I managed to run a casper-based LiveCD system without it. And grepping through the contents of the casper package I cannot find it either.



      What is it for? Will I benefit from including it into my live distribution?









      share














      There is /casper/filesystem.squashfs on the most LiveCDs of Ubuntu and derivatives that apparently contains the size value of the filesystem tree before compression. Some LiveCD customization articles mention that this file needs to be present in order for the system to boot correctly, but I managed to run a casper-based LiveCD system without it. And grepping through the contents of the casper package I cannot find it either.



      What is it for? Will I benefit from including it into my live distribution?







      live-usb live-cd





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      asked 6 mins ago









      Alexander SolovetsAlexander Solovets

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