> Thanks to all who replied.  Since it's a block by block copy
> I A) don't need
> to clear the copy-to target first, right?

True, provided the source and destination are the partitions covering the
entire physical disk.

  B) It will get the boot and
> partition records, right?

Yes, see above.


> David, when you say it doesn't work well on the disk you are
> running on,
> that's the disk I want to clone.  What kind of problems might
> I expect?

Mostly consistency problems, such as corrupted/truncated files if the source
disk changes while being copied to the destination. Same reason you don't
DDR a pack with active page/spool on it and expect it to be a completely
clean copy.  Most of this sort of inconsistency is fixable with fsck, but if
you want to guarantee a clean copy, then you can't be changing the disk out
from under dd.

-- db

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