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Thread: Large .ISO

  1. #1
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    Large .ISO

    I have a large .iso file, approximately 7.5GB. I need to transfer it from one computer of mine to another. If I burn the .iso to multiple disks, is it possible to recombine the file later on?
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  2. #2
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    Re: Large .ISO

    My own preference would be to put it on a DL disk if I had one available.
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  3. #3
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    Re: Large .ISO

    The largest storage medium I have is a standard DVD-RW.
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  4. #4
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    Re: Large .ISO

    Yep:
    Code:
    split -b 4300M big.iso
    to reassemble, use cat:
    Code:
    cat xa* > big.iso
    http://www.linuxquestions.org/linux/...assemble_files
    Last edited by sisco311; April 21st, 2010 at 10:13 PM. Reason: added link

  5. #5
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    Re: Large .ISO

    The other computer doesn't have Linux installed, it is a Windows computer.
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  6. #6
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    Re: Large .ISO

    Quote Originally Posted by Hman242 View Post
    The other computer doesn't have Linux installed, it is a Windows computer.
    Uh, I'm not sure about the syntax, but in cmd.exe you can run something like:
    Code:
    copy /b file1 + file2 + file3 big.iso
    maybe something like:
    Code:
    copy /b xa*+ big.iso
    sorry, I don't have Windows, can't test it.
    Last edited by sisco311; April 21st, 2010 at 10:32 PM.

  7. #7
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    Re: Large .ISO

    Many archive formats, including tar, zip, and rar, support multi-file archives. Try investigating whichever of these you've got on both Windows and Linux, or that you can most easily install on both platforms, to see how to do the job. With zip, you'd do this:

    Code:
    zip -s 4g zipfile.zip foo.iso
    This should produce as many 4GB or smaller files as necessary to hold foo.iso. The files will be called zipfile.z01, zipfile.z02, and so on up to zipfile.zip. In your case it'll probably be only two files (maybe just one), depending on whether the .iso file contains precompressed data. If you get three files, you can fine-tune the -s option or put the smallest zip file along with one of the big ones on one DVD-RW to get it all on two discs.

  8. #8
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    Re: Large .ISO

    7zip allows you to split up files easily. It goes up to 1000MB pieces I think, but you can put 4 on a DVD.

    Then you can open it back up on any system with 7zip.

  9. #9
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    Re: Large .ISO

    Thanks for those codes, I was able to successfully split and recombine the file. However, I am having a problem that might be related.

    When I try to run a .exe that was in the .iso, it says "Not a Valid Win32 Application". I've heard of many reasons that this can be caused by, and I'm wondering if the splitting and recombining could have caused this. Any help?
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  10. #10
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    Re: Large .ISO

    Quote Originally Posted by Hman242 View Post
    Thanks for those codes, I was able to successfully split and recombine the file. However, I am having a problem that might be related.

    When I try to run a .exe that was in the .iso, it says "Not a Valid Win32 Application". I've heard of many reasons that this can be caused by, and I'm wondering if the splitting and recombining could have caused this. Any help?
    Did you verify the MD5 of the .iso after transferring it?

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