Patent ID: 7023639

Claim:
A rotating media storage device (RMSD) connectable to a host, the RMSD comprising: a moveable head to perform track following; a disk having a circumferential track, the circumferential track having a plurality of embedded servo wedges utilized in track following, the plurality of wedges being spaced sequentially around a circumference of the circumferential track; and a synch mark detection circuit having a first detection mode and a second detection mode, wherein, in the first detection mode, the synch mark detection circuit detects a servo synchronization signal based on the head reading a servo synchronization mark (SSM) of a servo header of an embedded servo wedge, wherein, in the second detection mode, the synch mark detection circuit detects a servo synchronization signal based on the head reading a SSM and a wedge identifier (ID) of a servo header of an embedded servo wedge, the wedge ID being utilized in conjunction with the SSM to validate the servo synchronization signal.