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Thread: How do you get a 712+MB file on a 700MB CD?

  1. #1
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    How do you get a 712+MB file on a 700MB CD?

    OK, seems like no one else has had this problem, but KNOPPIX_V3.2-2003-04-18-EN.iso is 712MB plus. If I add a MB or 2 from my boot floppy, the files won’t burn to a 700MB CD.
    What am I missing here?

  2. #2
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    Re: How do you get a 712+MB file on a 700MB CD?

    Quote Originally Posted by FCizek
    OK, seems like no one else has had this problem, but KNOPPIX_V3.2-2003-04-18-EN.iso is 712MB plus. If I add a MB or 2 from my boot floppy, the files won’t burn to a 700MB CD.
    What am I missing here?
    Those are bytes not MB it works out to under 700MB (696+MB) and you should not be adding any files when you try to burn the image.

  3. #3
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    MB not equal to ###

    The .iso should work just fine--it did for me. Realize that file downloads show actual number of bytes in most cases. There's 1,024 B in a KB, and 1,024 KB in a MB. Thats 1,048,576 Bytes in a MB. If you divide the numbers you'd see that it just barely fits. 697MB kinda barely! It's really squeezed in there.

    Also, The disc is already bootable. It already has a boot image on it! You don't add anything to the iso--an iso is an exact disc copy. It has to burn on the disc exactly as the original was because the filesystem and blocks are copied not recreated.

  4. #4
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    make sure you burn the image to the disk... not the image ON the disk...

  5. #5
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    Re: How do you get a 712+MB file on a 700MB CD?

    Quote Originally Posted by FCizek
    OK, seems like no one else has had this problem, but KNOPPIX_V3.2-2003-04-18-EN.iso is 712MB plus. If I add a MB or 2 from my boot floppy, the files won’t burn to a 700MB CD.
    What am I missing here?
    Perhaps you have never heard of overburning
    A 700 MB cd can actually hold 703.125Mb. w/out overburning. IIRC some cdburners cannot handle overburning.

    edit
    It is possible to have overburning disabled.

  6. #6
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    Shh don't tell Klaus...

    Unless he's connected to that 'other' Klaus and can get me a new burner!

    I still wonder why the ISO is over 650 MB? certain drives *cough*sony*cough* that people have refuse to burn more than exactly spec. I have no problems. Just don't mention that I saw 800? MB CDRs at the show over the weekend. What ever would you do? How would you use them anywhere else? Don't let Klaus read about this!

  7. #7
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    I still wonder why the ISO is over 650 MB?
    Indeed, in order to have the broadest support(that is why all those scsi driver in the boot image), I prefer it to be within the 650MB envelope and the boot disk 1.44M(which is not a problem for KNOPPIX but many bootable linux CD lax that to 2.88M format and fail to boot on some old machines).

  8. #8
    Junior Member registered user
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    Use Nero Burning ROM...

    Sorry, never had a problem with to big images... Just burned them with Nero and everything is fine...

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