Recording medium with physical access control (PAC) cluster thereon and apparatus and methods for forming, recording, and reproducing the recording medium

摘要

A recording medium having at least one control data area storing control data in a recording unit. The control data may be used for managing an access to the recording medium. The medium having at least one management area storing status information for the control data area, wherein an invalid recording unit in the control data area is skipped and next available recording unit is used.