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On 11/17/2009 10:40 AM, Grant Edwards wrote: |
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> On 2009-11-17, Jos? Romildo Malaquias <j.romildo@×××××.com> wrote: |
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> |
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> |
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>> Once I have written a dvd ISO image to a dvd-r disk and then I have |
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>> deleted the image from the hard disk. Now I need the image again, but |
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>> reading the image from disk does not give me an identical image to the |
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>> original one. |
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>> |
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>> I have used the commands |
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>> |
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>> $ readcd -vvv dev=/dev/dvd f=image.iso |
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>> |
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>> and |
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>> |
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>> $ dd if=/dev/dvd of=image.iso |
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>> |
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>> With both commands, the resulting image is 99.9% identical to the |
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>> original one. |
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>> |
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> |
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> If you deleted the original, how do you know? the one you're |
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> creating from the DVD isn't identical? |
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> |
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> |
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>> Is there anything I can do to get an image identical to the |
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>> original one? |
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>> |
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> |
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> Since you still seem to have a copy of the original ISO, just |
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> use it. |
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> |
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My guess is that he has a slow internet connection, he downloaded a |
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large iso, burned it, deleted it, and now wants to get the iso back |
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without downloading it again, but he has access to the checksum/filesize |
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of the original iso from the place he downloaded it, and when he makes |
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an iso, the checksum/filesize does not match. |
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|
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Marcus |
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