Method for real time recording/playback of data to/from an optical recording medium and method for managing files thereof

A method for recording or reproducing a data file to/from an optical recording medium comprising:

• (a) in information about a defective area present in an area designated to write real time data upon reception of a command for the real time data recording;
• (b) receiving write command generated by referring to the information for a defective area;
• (c) writing the real time data in response to the write command provided in the step (b);
• and
• (d) writing a file architecture including plurality of file entries, which are separated by the defetive area, the defective area being excluded from the file architecture.

A recording medium, comprising:

• a Defect Management Area for managing a defective area, and a data area including a real time data file;
• a spare area for replacing defective areas of the data area;
• and
• a file architecture area to manage the written data file in the data area, wherein a file architecture in the file architecture area includes sub-imformation indicating at least a length of a data file written, the sub-information being written separately by the defective areas.