Info about logical sector size is stored in disk controller and is reported to operating system (OS), determining how OS sees this drive: as 512īytes per sector or as 4K per sector drive.Ĭommon drives have 512 bytes per sector both on physical and logical level, while Advanced Format Drives (AFD) have 4096 (4K) bytes per physical sector but emulate 512 bytes per logical sector. įrom Paragon kb : A hard disk (HDD) has physical sector size determined by its geometry and logical disc sector size. That is because data integrity usually cannot be ensured between different logical sector drives. It is not possible to copy one to another if logical sector size of target drive differs from logical sector size of source drive. A sector by sector clone means that even blank sectors with no information will be cloned.
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