dd cloning slightly different disks
jerrymc at msu.edu
Tue Mar 30 16:56:25 UTC 2010
On Tue, Mar 30, 2010 at 06:26:08PM +0200, Christoph Kukulies wrote:
> Jerry McAllister schrieb:
> >On Tue, Mar 30, 2010 at 05:47:44PM +0200, Christoph Kukulies wrote:
> >>Though not 100% FreeBSD centric, my question, I know that disk
> >>partitioning experts are around here.
> >>My noteook HD is a WD 5000BEVT, (500GB). Today I bought a Kingston SDnowV+
> >>Solid State drive, 512GB, with the intention to make my notebook a bit
> >>faster. It's an Intel Core 2 Duo,
> >>7400 CPU.
> >>The WD disk shows as having 976773168 sectors (500108 MB),
> >>the SSD has 1000215216 sectors (512110 MB).
> >>At the moment I'm copying (dd) from the WD internal disk to the SSD
> >>which I had put into
> >>an external SATA Icybox.
> >>I'm hoping to be able to use my FreeBSD and Windows partitions
> >>afterwards somehow,
> >>possibly with some geometry tweaking or what. Due to the different disk
> >>I'm expecting that the partition table entries will be wrong.
> >>Any clues how I should proceed when the copy will be done in 7 hours or
> >>so? (20MB/s
> >>is the transfer rate I got from a short test that I did before starting
> >>the big copy).
> >Well, this could possibly work, but I wonder why you want to do it
> >this way. I would be inclined to divide the disk as desired, do
> >the MSW install in the first slice and then get a FeeBSD fixit and
> >partition the other slice and then use dump/restore to move the FreeBSD
> >stuff over. That way you get the best fit for the new disk, no
> >worries about tweaking geometry and no loss of the amount the new
> >drive is bigger than the old one.
> Reason was: I wanted to preserve all settings (Windows XP and FreeBSD)
> and avoid any
> reinstallation of packages or sth. and wanted to continue working with a
> minimum of interruption.
Well, I don't know about the MSW stuff, but for the FreeBSD part,
the dump/restore would keep everything they way it was.
> Maybe I could use the 12GB overspace either later by assigning it an
> extra partition or
> grow some partition that is adjacent to the free space.
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