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	Logical Block Addressing
		Prior to the advent of Logical Block Addressing, all hard drives were accessed via CHS (Cylinder, Head, Sector) or Extended CHS, which means that the drive was accessed by specifying its cylinder, head and sector address.
		In essence, LBA is a means by which a drive is accessed by linearly addressing sector addresses, beginning at sector 1 of head 0, cylinder 0 as LBA 0, and proceeding on in sequence to the last physical sector on the drive, which, for instance, on a standard 540 Meg drive would be LBA 1,065,456.
		Logical Block Addressing isn't getting around the barrier, because it is just another manner in which to address the same geometry.
	www.dewassoc.com /kbase/hard_drives/lba.htm (0 words)

	Logical Block Addressing (LBA)
		Regular addressing of IDE/ATA drives is done by specifying a cylinder, head and sector address where the data that is required resides.
		Extended CHS addressing adds a translation step that changes the way the geometry appears in order to break the 504 MiB barrier, but the addressing is still done in terms of cylinder, head and sector numbers (they are just translated one or more times before they get to the actual disk itself).
		Your address (assuming you live in the U.S. and have a regular address) is composed of a street number, street name, city name and state name.
	www.storagereview.com /guide2000/ref/hdd/bios/modesLBA.html (0 words)

	15-410 IDE device driver page
		In fact, through a convenient abstraction known as logical block addressing, or LBA addressing (yes, that is technically logical block addressing addressing, but that is unfortunately the way the term is used), the geometry of the disk need not be a concern to you.
		LBA addressing numbers the sectors throughout the disk (all sectors on all surfaces) from zero on up, so that the disk appears to the system programmer like a large array of sectors.
		Blocks until the disk is ready (on power-up a real disk may need time to begin responding to commands), and finds out how big the disk is.
	www.cs.cmu.edu /~410-f03/p4/p4disk.html (850 words)

	ONLamp.com -- Understanding Unix Filesystems
		For example, if you started with 16,065 physical blocks that were each 512 bytes in size, a fragment size of 4 would give you 64,260 logical blocks that were each 128 bytes in size.
		Each fragment can be treated as a storage block and only store one file, meaning the table now has 64,260 entries, but you still don't have to worry about about keeping track of multiple files per logical storage unit.
		It's not enough to know that this file lives in, say, blocks 3 and 4; you also need to know that the first 512 bytes of that file lives in block 3, and the remainder of that file lives in block 4.
	www.onlamp.com /pub/a/bsd/2001/02/28/FreeBSD_Basics.html (0 words)

	LBA - Logical Block Addressing
		LBA is a acronym that can contains many meanings which are listed below.
		There may be many popular meanings for LBA with the most popular definition being that of Logical Block Addressing
		If you have more information or know of another definition for LBA, please let us know so that we can review it and add that information to our database.
	www.auditmypc.com /acronym/LBA.asp (167 words)

	Smart Computing Article - List Administrator to Logical Block Addressing (LBA) (Site not responding. Last check: )
		The logic bomb usually does not start to do its damage when it is loaded on to the computer or network; rather, it does its damage at a preset time.
		Logic bombs can reach computers or networks in one of three ways: hidden in an e-mail message, hidden in the pages of code inserted in hacked Web sites, or concealed in corrupted shareware that the user downloads on to their system.
		On networks there have been rumored occasions where a logic bomb has gone into action after an employee was fired and his records had been deleted from the payroll system run on a program connected to the infected network.
	www.smartcomputing.com /editorial/article.asp?article=articles/archive/r0602/73r02/73r02.asp&guid=1arjn6ho (4374 words)

	CSC 3453 File System Structure (Site not responding. Last check: )
		A Linear Block Address is the index of a block from the logical beginning of a storage device.
		Note: Minix refers to these blocks as ``zones''; originally, Minix allowed for the possibility for a file to be composed of zones that were a multiple of the block size.
		Either files have to be moved around to allow additional blocks to be appended to a growing file, or space has to be left at the end of each file to allow for growth.
	carbon.cudenver.edu /~jnoll/3453/fs-structure.html (2797 words)

	Toshiba Develops LBA-NAND(TM) Flash Memory With Logical Block Addressing for Embedded Applications
		NAND Flash memory currently uses the physical address access method that defines each physical page of a memory, from the chip to the block, to the page and down to the cell.
		The logical address access method of LBA assigns each cell a unique address that is not geometry dependent.
		Adopts logical address access method: LBA-NAND(TM) controls the processes of block management, ECC process and wear-leveling, and will contribute to shorter R&D schedules and lower costs for the development of host controller and driver software.
	www.prnewswire.com /cgi-bin/stories.pl?ACCT=104&STORY=/www/story/08-02-2006/0004408672&EDATE= (1088 words)

	What is LBA? - A Word Definition From the Webopedia Computer Dictionary
		(pronounced as separate letters) Short for logical block addressing, a method used with SCSI and IDE disk drives to translate the cylinder, head, and sector specifications of the drive into addresses that can be used by an enhanced BIOS.
		LBA is used with drive's that are larger than 504 MB.
		Includes sections on normal/standard CHS mode, Extended CHS/large mode, Logical Block Addressing (LBA), a comparison of translation modes, and caveats on changing translation modes and transferring hard disks between PCs.
	www.webopedia.com /TERM/A/LBA.html (120 words)

	Glossary Search Results (Site not responding. Last check: )
		LBA (Logical Block Addressing) - A form of addressing used by Enhanced IDE to recognize hard drives over 528 MB, as specified in the original IDE standard.
		LBA literally translates the hard drive's parameters into logical parameters that are able to be recognized by the computer BIOS.
		Logical Unit Number (LUN) - A term used in the context of devices connected to a SCSI controller.
	www.geek.com /glossary/glossary_search.cgi?l (2819 words)

	Kernel Korner - I/O Schedulers
		That is, logical block n tends to be physically adjacent to logical block n+1.
		Because the files are broken down into individual blocks, and hard drives are addressed by block and not the much more abstract concepts of files, reading or writing file data is broken down into a stream of many individual I/O requests, each to a different block.
		If the blocks are not near one another, the disk head must move to another location on the disk.
	www.linuxjournal.com /node/6931/print (2828 words)

	LBR: Logical Blocking Addressing
		Logical Block Addressing (LBA) is a method of accessing hard disk drives.
		It allows IDE disks larger than 504 megabytes (1024 cylinders) in size to be fully partitioned using the MS-DOS fdisk command.
		Prior to this technology, ROM BIOS limitations prevented the fdisk command from using an entire hard disk that was larger than 504 megabytes (MB) in size, except by using other controller ROM routines that effectively translate the hard disk's native geometry.
	www.javvin.com /hardware/LBR.html (0 words)

	What is logical block addressing? - a definition from Whatis.com - see also: LBA
		- Logical block addressing is a technique that allows a computer to address a hard disk larger than 528 megabytes.
		A logical block address is a 28-bit value that maps to a specific cylinder-head-sector address on the disk.
		Logical block addressing is one of the defining features of Enhanced IDE (EIDE), a hard disk interface to the computer bus or data paths.
	searchsmb.techtarget.com /sDefinition/0,,sid44_gci214074,00.html (202 words)

	CSC 5573 Lecture Notes: File System (Site not responding. Last check: )
		When a process reads or writes a block that is not in the cache, the buffer manager has to choose a buffer into which the new block's data can be read.
		When the log wraps to a live block, it is copied to the beginning of the log, then log writes proceed as before at the end of the log.
		This is easy to do: all inodes and valid blocks are in the log, so the recovery manager just starts at the end of the log and goes back to pick up the most recent inodes; these then point to the valid blocks that are part of the file.
	carbon.cudenver.edu /~jnoll/5573.fall98/file-sys.html (2771 words)

	TOSHIBA DEVELOPS LBA-NAND FLASH MEMORY WITH LOGICAL BLOCK ADDRESSING FOR EMBEDDED APPLICATIONS
		NAND Flash memory currently uses the physical address access method that defines each physical page of a memory, from the chip to the block, to the page and down to the cell.
		The logical address access method of LBA assigns each cell a unique address that is not geometry dependent.
		This approach also allows block management, error correction (ECC process) and wear-leveling, all of which are conventionally controlled by the host side, to be handled on the memory side by the LBA-NAND™ controller.
	www.toshiba.com /taec/news/press_releases/2006/memy_06_337.jsp (0 words)

	Logical Block Addressing definition - computer dictionary online
		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.
	www.bestonlinedictionary.com /computer-terms-dictionary/computer-dictionary-l/definition-LBA.htm (0 words)

	Logical Block Addressing (LBA) Defined
		LBA is a run-time function of the system BIOS.
		The BIOS uses LBA for the following commands: read (with and without retries), read verify, read long, write (with and without retries), write verify, write long, read multiple, write multiple, read DMA, write DMA, seek, and format track.
		American Megatrends, Inc. has confirmed that versions of its BIOS dated 4-25-94 and later are compatible with LBA.
	support.microsoft.com /default.aspx?scid=kb;EN-US;122052 (0 words)

	How to enable 48-bit Logical Block Addressing support for ATAPI disk drives in Windows XP
		This article describes the Microsoft Windows XP Service Pack 1 (SP1) 48-bit Logical Block Addressing (LBA) support for ATA Packet Interface (ATAPI) disk drives that can increase the capacity of your hard disk to more than the current 137 gigabyte (GB) limit.
		If you enable the 48-bit LBA ATAPI support by editing the registry setting, but you lack both a 48-bit LBA compatible BIOS and a hard disk that has a capacity that is see comment than 137 GB, you have not changed the system.
		The registry value EnableBigLba is enabled without a 48-bit LBA compatible BIOS, but you have a hard disk with a capacity that is larger than 137 GB.
	support.microsoft.com /default.aspx?scid=kb;en-us;303013 (0 words)

	BBPC News \| BuildOrBuy - Bios and Windows OS Limitations for PATA Hard Drives
		This barrier is derived from the fact that some BIOS Manufacturers implemented Logical Block Addressing (LBA) translation in their BIOS with a 4,093 - 4,096 cylinder limitation.
		This condition is caused by the Award BIOS inability to address HD Drives greater than 32GB.
		Drivers that use the 28-bit logical block addressing (LBA) ATA commands are limited to 137 gigabytes (GB).
	www.buildorbuy.org /bioslimits.html (0 words)

	How to enable 48-bit Logical Block Addressing support for ATAPI disk drives in Windows XP
		The registry value EnableBigLba is enabled, but you do not have a 48-bit LBA compatible BIOS and the capacity of the hard disk is not greater than 137 GB.
		If you enable the 48-bit LBA ATAPI support by editing the registry setting, but you lack both a 48-bit LBA compatible BIOS and a hard disk that has a capacity that is see comment than 137 GB, you have not changed the system.
		The registry value EnableBigLba is enabled without a 48-bit LBA compatible BIOS, but you have a hard disk with a capacity that is larger than 137 GB.
	www.support.microsoft.com /default.aspx?scid=kb;en-us;303013 (1061 words)

	48bitLBA.com - HOME
		48-bit Logical Block Addressing (LBA) is a technology which extends the capacity of IDE ATA/ATAPI devices beyond a previous limit of 137.4 GB.
		Some versions of Microsoft Windows do not support hard drives greater than 137 GB at all, other versions do but it may be necessary to update the operating system with the latest Service Pack and a parameter may need to be defined and set properly in the Windows registry.
		If you are new to 48-bit LBA you may want to refer to the Overview section which contains a basic tutorial on the technology.
	www.48bitlba.com (505 words)

	PC-Media Tech Forums - Logical Block Addressing
		When I go to load Windows 98 on it I get an error message that I should enable Logical Block Addressing or else good blocks could be marked as bad.
		The only way that the machine can detect the hard drive is to configure it as Cable Select, in which case the drive is recognized as Slave, (oddly enough) regardless which connector it is connected to.
		I am sure that in having set things up this way, the system was not able to recognize the drive as Master and assumed that it was an LBA problem.
	forum.pcmech.com /printthread.php?t=78436 (914 words)

	xxcopy/logical block addressing and mbr [XARC 1598]
		the OS is win me....when it was all installed for soem reason the bios picked up as logical block addressing and identiefed it as a 20 gig drive....
		my question is concerning the logical block addressing...
		then I intend on fdisking the old drive and reformatting all without the 120 so that is becomes a bootable drive without the logical block addressing....
	www.xxcopy.com /xarc/msg/msg01598.htm (410 words)

	Logical Block Addressing (Site not responding. Last check: )
		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.
	burks.bton.ac.uk /burks/foldoc/3/68.htm (124 words)

	Toshiba Unveils Logical Block Addressing NAND - 8/2/2006 - Electronic News (Site not responding. Last check: )
		NAND flash memory currently uses the physical address access method that defines each physical page of a memory, from the chip to the block, to the page and down to the cell, Toshiba explained.
		The logical address access method of LBA assigns each cell a unique address that is not geometry dependent, Toshiba said.
		This approach also allows block management, error correction (ECC process) and wear-leveling, all of which are conventionally controlled by the host side, to be handled on the memory side by the LBA-NAND controller, Toshiba said.
	www.edn.com /article/CA6358619.html?partner=enews&nid=2555 (463 words)

	Hale's HIW: Facts and Fiction
		LBA provides only a slight performance improvement for some protected mode operating systems, HOWEVER, those systems MUST still boot in CHS mode and use CHS mode to understand the drive configuration data returned by INT 13H AH=08H and to understand the partition layout of the drive.
		If an OS decides to use LBA addressing it MUST not attempt to access any sectors that are beyond those that can be accessed by the CHS mode returned by INT 13H AH=08H.
		LBA processing in many drives is slower than CHS processing (this will change as drive vendors optimize their hardware and firmware for LBA in future drives).
	www.ata-atapi.com /hiwfnf.htm (4801 words)

	FormatterOne Pro for Windows (FAQ's) (Site not responding. Last check: )
		The logical block size refers to the size of the layout written to the media once the media has been formatted and partitioned.
		Standard Windows 3.x O/S will only handle 512 b/s logical block size and Windows 95 will only handle media where the logical block size equals the physical block size.
		Since Windows 95 formats the 1024 byte media according to its physical block size, Win 3.x cannot recognize the partition map since it is not written with 512 byte logical block addressing.
	www.softarch.com /us/support/windows/fop.html (381 words)

	WebWire \| Toshiba’s new LBA-NAND(TM) Flash Memory to Launch in Global Market
		Product manufacturers have to develop host side and driver specifications that can recognize and accommodate this physical addressing, and must bear the R&D costs for developing new product specifications and drivers to absorb advances in NAND Flash memory capacity.
		This approach also allows block management, error correction (ECC process) and wear-leveling, all of which are conventionally controlled by the host side, to be handled on the memory side by the LBA-NAND controller.
		LBA-NANDTM controls the processes of block management, ECC process and wear-leveling, and will contribute to shorter R&D schedules and costs for the development of host controller and driver software.
	www.webwire.com /ViewPressRel.asp?aId=17800 (539 words)

	ECE - product news (Site not responding. Last check: )
		Toshiba announced that it has brought logical block addressing to NAND Flash memory, and that it will launch LBA-NAND, a line-up of high-capacity devices integrating the new addressing method.
		Product manufacturers have to develop host side and driver specifications that can recognise and accommodate this physical addressing, and must bear the RandD costs for developing new product specifications and drivers to absorb advances in NAND Flash memory capacity.
		This approach also allows block management, error correction and wear-levelling - all of which are conventionally controlled by the host side - to be handled on the memory side by the LBA-NAND controller.
	www.embedded-control-europe.com /prodnews?cat=1&pid=9610 (225 words)

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