> Date: Mon, 05 Nov 2012 15:42:45 +1000 > From: Da Rock <[email protected]> > Subject: Re: Questions about dump/restore to/from DVD media > > On 11/05/12 14:14, Polytropon wrote: > For reference, if one did backup the whole slice/disk using dd and then > compressed the data, would that effectively compress all those > 'unallocated' nodes?
NO. The unallocated' blocks still have whatever data was in them. *IF* you copy /dev/zero to a new file, to fill the disk, then rm -that- file, the compression will be higher. 'How much' depends on how empty the disk is. _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[email protected]"
