Re: LABEL's

On 8/30/07, Matthew Flaschen <matthew.flaschen@xxxxxxxxxx> wrote:
Jacques B. wrote:

Your second part is incorrect. It does not matter if there is a file
system or not (ANY file system) when copying from device/partition to
device/partition (i.e. if=/dev/???? and of=/dev/????). dd OVERWRITES
EVERYTHING.

No. It will only overwrite the number of bytes that are copied. Bytes
after that will be ignored. Thus, it's better to zero the partition first.

Matt Flaschen

Ok, I was too general in order to keep it as simple as possible.
Correct that if you are copying 10 gigs onto 30 gigs that it will only
overwrite 10 gigs, not the entire 30 gigs. The remainder will be
unused space. You do not have to zero it first, but I agree it is
certainly a good practice. I didn't want to throw a dd if=/dev/zero
into the mix.

Jacques B.

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