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On 06/05/10 16:11, Manuel Klemenz wrote: |
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> I'm calculating checksums over partitions just by calling # md5sum |
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> /dev/sda1 or for the complete disk (incl. partition table + all |
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> partitions) # md5sum /dev/sda |
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> |
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> that's it :) - works with any distro/liveDVD |
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> |
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Yep...... don't have to fool with an oddball program (dcfldd). So if |
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you're dd'ing a disk, you need to: |
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1. dd the source to the destination. |
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2. md5sum the source |
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3. md5sum the destination. |
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(3 passes on a big disk(s) takes a long time.) |
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But if you use dcfldd instead of dd for the copy, then you'll get both |
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the copy and the md5 on the first pass. |
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1. dcfldd the source to the destination; get the md5. |
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2. md5sum the destination. |
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And if you use dcfldd instead of md5sum to run the destination hash, you |
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can specify a large (e.g. 4 gig) blocksize - cutting back on disk I/O, |
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wear and tear, and time required to hash the destination. |
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