Partition 0 not aligned on cylinder boundary: "

hi Guys ..

user want mirror disk c3t9d0 (running ) to c2t9d0 (fresh hdd).

when i tried to

bash : prtvtoc /dev/rdsk/c3t9d0s2 | fmthard -s- /dev/rdsk/c2t9d0s2 

it showing following error

Partition 0 not aligned on cylinder boundary: " 0 4 222 ..... 
 
unable to mirror ....

plz help me soon .. i'm waiting for your reply

are the disk identical?

show output from iostat:

iostat -E