duplicate a drive

[Warren Block]

On Fri, 24 Oct 2008, Joey Mingrone wrote:

> The next thing I've tried to do, without success, is mirror the
> contents of the 2.5" drive to a 3.5" drive in the desktop.
>
> The 2.5" drive is sliced/partitioned like this:
>
> Filesystem      Size    Mounted on
> /dev/ad0s2a     989M   /
> /dev/ad0s2d     989M   /tmp
> /dev/ad0s2f      59G     /usr
> /dev/ad0s2e     989M   /var
>
> ad0s1 is a 20GB slice that I have window installed on.
>
> The drive's total capacity is 80G.
>
> The 3.5" drive is only 70G so I'll have to skip the ad0s1 slice.
> Ideally what I'd like to do is copy everything from the ad0s2 slice to
> the 3.5" and run the OS off that drive.  Then, each dump the contents
> of the 3.5" drive to the 2.5" drive.  That way if either drive dies
> I'll, hopefully at worst, just have to switch which drive I boot from.
>
> Can anyone with experience doing something this make suggestions?

http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/disks.html#NEW-HUGE-DISK

-Warren Block * Rapid City, South Dakota USA