Editing Logical block addressing (section)

==={{anchor|LBA64}}LBA48===
The current 48-bit LBA scheme was introduced in 2002 with the [[ATA-6]] standard,<ref>{{cite web |url=http://www.t13.org/Documents/UploadedDocuments/project/d1410r3b-ATA-ATAPI-6.pdf|title=Information Technology - AT Attachment with Packet Interface - 6 (ATA/ATAPI-6) |website=[[International Committee for Information Technology Standards|www.t13.org]] |date=26 February 2002 |access-date=15 December 2020 |archive-url=https://web.archive.org/web/20200806032447/https://t13.org/Documents/UploadedDocuments/project/d1410r3b-ATA-ATAPI-6.pdf |archive-date=6 August 2020}}</ref> raising the addressing limit to 2{{sup|48}}{{nbsp}}× 512 bytes, which is exactly 128{{nbsp}}[[Pebibyte|PiB]] or approximately 144{{nbsp}}[[Petabyte|PB]]. Current PC-compatible computers support INT&nbsp;13h Extensions, which use 64-bit structures for LBA addressing and should encompass any future extension of LBA addressing, though modern operating systems implement direct disk access and do not use the [[BIOS]] subsystems, except at [[boot loader|boot load]] time. Disks partitioned with [[Master boot record|MBR]] use 32-bit logical block addressing LBA to handle the total number of physical or logical sectors, that is, they can handle a total maximum of 4,294,967,296 sectors (2^32). This means that traditionally a maximum data limit of 2 [[tebibyte]]s could be stored per hard disk, since these have a physical and logical sector size of 512 bytes. This limit can be exceeded up to 16 TiB with a physical and logical sector of 4096 bytes.<ref>{{cite web|url=https://goughlui.com/2013/10/02/experiment-usb-to-sata-bridge-chips-and-2tb-drives|title=USB to SATA bridge chips and +2Tb drives|accessdate=January 26, 2025|language=English}}</ref>