Logical Block Addressing

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LBA (Logical Block Addressing) - the method of addressing storage by the operating system. The LBA uses a simple linear addressing scheme. The blocks are addressed by consecutive natural numbers, with the first block having LBA 0, second-1, and so on.

The system introduced to overcome the border of 528 MB = 504 MiB (1024 × 16 × 63 sectors), in the EIDE standard using the previous cylinder method, head, sector. In the LBA method, Address translation, that is, to change the number of the cylinder, cylinder and sector to their logical equivalent, ie the sector number from the beginning. So complex addressing with cylinders, heads and sectors (Cylinder Head Sector),

Formula for calculating LBA: LBA = (cylinder_count * cylinder_count_number + total_number) * number_section_node + node_number -1

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