Re: ffs can't find superblock

[mortee <mortee.lists%kavemalna.hu@localhost>]

On 02/08/2011 21:40, Manuel Bouyer wrote:
> On Tue, Feb 08, 2011 at 09:34:15PM +0100, mortee wrote:
>> My questions: is there any difference data-wise between using the raw or
>> block devices?
> 
> Yes. You'd better use the character device.

What's the difference?

>> And also why is it failing with that message?
> 
> I guess sd0a is at the start of the parititon. You're trying to
> overwrite the disklabel.
> If you want to backup the whole disk, use dd if=/dev/rsd1d of=/dev/rsd0d

Ah, I see. Won't it screw the target disk up? They are not of the same
size and geometry (the target is a bit bigger).