> >From the command line, issue the following: > > dd if=/dev/hda of=/dev/hdc bs=1024 > > in the example above, make sure that /dev/hda and /dev/hdc correspond to > the proper drives > > Also, I'd recommend installing hdparm (if it's not installed already) and > then issuing the commands > > hdparm -d1 /dev/hda > hdparm -d1 /dev/hdc > > to switch on DMA on both drives (this doesn't apply if your drives are > scsi). > > You will save yourself *hours*, if not days (depending on disk size) by > switching on dma. > > The other caveat here is that your target disk *must* be of the same size > or larger than your source disk. > > Ian
Related question: Some of my partitions have a blocksize (bs) of 4096, rather than 1024. Is it important to use "bs=xxxx" in the "dd" command, where "xxxx" equals the actual blocksize of the disk or partition being copied? Furthermore if, say, /dev/hda happens to have two partitions on it with different blocksizes, would I be smart to copy them separately, or would dd handle the change in blocksize by itself? Or is the "bs" option to "dd" just a buffer size used during the copying procedure? If so, would it speed things up to use a larger value? Jim _______________________________________________ Seawolf-list mailing list [EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/seawolf-list
