How to attach mirroring to a mount point

Hi,
I had done a patch installation in solaris 5.9 server so before that i detached mirroring from /,/usr,/var using the command

 metadetach d10 d12

 Now i want to attach the mirrors again
 How i can do the same? 

 metattach d10 d12 is correct or not?

It is correct.