logical block addressing
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- US Pronunciation
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Definition of logical block addressing words
- noun Technical meaning of logical block addressing (storage) (LBA) A hard disk sector addressing scheme used on all SCSI hard disks, and on ATA-2 conforming IDE hard disks. The addressing conversion is performed by the hard disk firmware. Prior to LBA, combined limitations of IBM PC BIOS and ATA restricted the useful capacity of IDE hard disks on IBM PCs and compatibles to 1024 cylinders * 63 sectors per track * 16 heads * 512 bytes per sector = 528 million bytes = 504 megabytes. Modern BIOSes select LBA mode automatically, and work around the 1024-cylinder BIOS limit by representing a hard disk to the OS as having e.g. half as many cylinders and twice as many heads. However, there is still an unbreakable BIOS disk size limit of 1024 cylinders * 63 sectors per track * 256 heads * 512 bytes per sector = 8 gigabytes, but modern OSes (including Windows 9x, Windows NT and Linux) are not affected by it, since they issue direct LBA-based calls, bypassing the BIOS hard disk services completely. 1
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Parts of speech for Logical block addressing
noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
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Matching words
- Words starting with l
- Words starting with lo
- Words starting with log
- Words starting with logi
- Words starting with logic
- Words starting with logica
- Words starting with logical
- Words starting with logicalb
- Words starting with logicalbl
- Words starting with logicalblo
- Words starting with logicalbloc
- Words starting with logicalblock
- Words starting with logicalblocka
- Words starting with logicalblockad
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