How do you get to fight commander Sark in Kingdom Hearts 2

You tavel an the Sailer to reach the MCP at the simulation hanger. after defeating some enimes on the way you'll get a chance to rest. Go in to face the MPC and Sark will be waiting. Hes not so though so take him out fast then he'll become a gient and can be knocked out with a reaction comand just go to the wall and you'll take him down.