We cold copied all datafiles from out old server to our new one. However, the datafiles sit in a different directory structure

We are going to run the "create controlfile" to re-identify to locations of the datafiles (from /oradata to /u01/POSPROD/dbf).

Can we then (after the control files are made and copied to the locations specified in the init.ora) simply startup the DB,
or must we statup mount, and do a "rename database datafile ... from the old to new locations?

I thought all we had to do was update the control file.. correct?