Baslinux mailing list

[Karolis Lyvens <karolisl AT gmail.com>]

On Tue, Nov 28, 2006 at 12:52:57AM +0000, sindi keesan wrote:

> > If you need to clone MBR from hda to hdc (there's only one MBR in whole
> > disk, so, AFAIK, you don't need partition number (hda1, hdc1)), then
> > the command is:
> >
> > --
> > dd if=/dev/hda of=/dev/hdc bs=512 count=1
> 
> I did that and it messed up the second drive, which was a different size 
> from the first (larger) so I had to delete the partitions with fdisk and 
> remake and reformat.  This was after copying just hda1 to hdc1, where hda1 
> was 325MB and the only partition, and hdc1 was 326MB and one of two 
> partitions.

Sorry, i did not take in consideration that dd's MBR cloning doesn't
really work for hard drives of different sizes.

So it copied a bigger disk's boot record+partition table to a smaller
disk, and overwrited smaller disk's own partition table...