Editing Logical block addressing (section)

{{Short description|Way to specify the location of data on computer storage devices}}
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'''Logical block addressing''' ('''LBA''') is a common scheme used for specifying the location of [[Block (data storage)|blocks of data]] stored on [[computer storage]] devices, generally [[secondary storage]] systems such as [[hard disk drive]]s.  LBA is a particularly simple [[linear addressing]] scheme; blocks are located by an integer index, with the first block being LBA 0, the second LBA 1, and so on.<ref>{{Cite web |title=What is logical block addressing (LBA)? {{!}} Definition from TechTarget |url=https://www.techtarget.com/whatis/definition/logical-block-addressing-LBA#:~:text=Logical%20block%20addressing%20(LBA)%20is,computer%20bus%20or%20data%20paths. |access-date=2025-03-22 |website=WhatIs |language=en}}</ref>

The [[Parallel ATA|IDE]] standard included 22-bit LBA as an option, which was further extended to 28-bit with the release of ATA-1 (1994) and to 48-bit with the release of ATA-6 (2003), whereas the size of entries in on-disk and in-memory data structures holding the address is typically 32 or 64 bits. Most hard disk drives released after 1996 implement logical block addressing.