Adding to what "Levi-Pereira" advised above, you can also use "asmtoolg" which is a GUI tool on windows for stamping the disks. This tool should show you all disks attached to the system. Here you should see ocr and voting disks with caption "Oracle raw partition".
With 10gR2 ,OCR and voting disk will be in outside of ASM .
As it is not supported .
For you storage migration you can use below document to understand exact steps to move.
OCR / Vote disk Maintenance Operations: (ADD/REMOVE/REPLACE/MOVE) (Doc ID 428681.1)