Data management device and method for managing recording medium

A data management device for managing a computer readable recording medium recorded with a partition table having information regarding a partition, and on which a basic partition and an extended partition are formed using a partition description, by referring to the partition table, the basic partition having recorded therein a property file having access information for a basic playback unit included in a file recorded on the extended partition, the data management device comprising:

• a mapping section for assigning a logical sector address to the recording medium connected via a network;
• a network address conversion section for converting address data assigned as the logical sector address into a network address of the recording medium connected via the network;
• and
• a chapter address conversion section for converting the access information indicated by the property file into a name of the file and for accessing the basic playback unit,
• in which the extended partition includes an extended partition boot record in which a first part thereof is without a bootstrap loader and immediately following the first part further includes a first plurality of tables having current partition information and a second plurality of tables having next partition information, and
• in which a first table of the first plurality of tables includes information on a boot flag and a start Cylinder Head Sector (CHS) address, a second table of the first plurality of tables includes information on a partition type and an end CHS address, a third table of the first plurality of tables includes information on a start Logical Block Addressing (LBA) address, and a fourth table of the first plurality of tables includes information on a partition size in LBA format.

A data management device for managing a computer readable recording medium that includes a basic partition table holding a start address of a partition and a size of the partition and an extended partition table according to a new method where a storage area for the start address and the partition size in the basic partition table is extended, and that is divided into the basic partition formed according to the basic partition table and an extended partition formed according to the extended partition table according to the new method, the data management device comprising:

• an index file creating section for locating an index file in the basic partition and registering an index that associates a data file recorded in the extended partition and a storage area of the data file in the index file;
• and
• a data file searching section for searching for the storage area of the data file recorded in the extended partition on the basis of the index file,
• in which the extended partition includes an extended partition boot record in which a first part thereof is without a bootstrap loader and immediately following the first part further includes a first plurality of tables having current partition information and a second plurality of tables having next partition information, and
• in which a first table of the first plurality of tables includes information on a boot flag and a start Cylinder Head Sector (CHS) address, a second table of the first plurality of tables includes information on a partition type and an end CHS address, a third table of the first plurality of tables includes information on a start Logical Block Addressing (LBA) address, and a fourth table of the first plurality of tables includes information on a partition size in LBA format.

A method for managing a computer readable recording medium that includes a basic partition table storing a start address of a partition and a size of the partition and an extended partition table where a storage area for the start address and the partition size in the basic partition table is extended, and that is divided into a basic partition formed according to the basic partition table and an extended partition formed according to the extended partition table, the method comprising:

• locating an index file in the basic partition;
• recording a data file in the extended partition;
• creating an index associating a storage area of the data file recorded in the extended partition and the basic partition;
• and
• registering the index in the index file,
• in which the extended partition includes an extended partition boot record in which a first part thereof is without a bootstrap loader and immediately following the first part further includes a first plurality of tables having current partition information and a second plurality of tables having next partition information, and
• in which a first table of the first plurality of tables includes information on a boot flag and a start Cylinder Head Sector (CHS) address, a second table of the first plurality of tables includes information on a partition type and an end CHS address, a third table of the first plurality of tables includes information on a start Logical Block Addressing (LBA) address, and a fourth table of the first plurality of tables includes information on a partition size in LBA format.