Ow Mun Heng wrote:
Do NOT use dd to copy from drive to drive unless the drives are exactly identical. "dd" used on a device level creates an /exact/ copy, so copying a 30gb drive to an 80gb drive will leave you with a useable 30gb drive. It would copy partition table, drive geometry, etc. and make an exact bit for bit image.
-----Original Message----- From: fedora-list-bounces@xxxxxxxxxx [mailto:fedora-list-bounces@xxxxxxxxxx]On Behalf Of Andy Green Sent: Friday, April 16, 2004 5:27 AM To: For users of Fedora Core releases Subject: Re: Duplicating a Fedora PC
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On Thursday 15 April 2004 17:57, Don Levey wrote:
More experienced heads may have a better way, but I would
be using dd.
dd may be a good solution. The man page is not too helpfulfor me; is
there a write-up toward which someone can point me?dd is really handy to have in your toolkit. It is basically a byterange version of cp.
The concept is if you have two HDDs installed, say as /dev/hda and /dev/hdb, then you can open /dev/hda and copy what you find in that 'file' over to /dev/hdb. This makes a perfect duplicate because what is 'in' /dev/hda is every sector on that hard drive.
What if the source hard-drive is smaller than the newer one? Can it still image everything and leave the free space as free??
eg : 30Gb->80Gb?
It us usually safe to use dd to copy a partition to another *identically sized* partition.
I did not see the beginning of this thread, so I don't know exactly what you are trying to do, but it sounds to me like you need something other than "dd" to accomplish it.
