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Newer page: version 5 Last edited on Sunday, September 26, 2004 8:49:00 pm by AristotlePagaltzis
Older page: version 4 Last edited on Sunday, September 26, 2004 7:29:27 pm by DanielLawson Revert
@@ -1,30 +1,32 @@
 An Acronym for __L__ogical __B__lock __A__ddressing 
  
-[LBA] gives sectors a linear number starting with , as opposed to the classic cylinder-head-sector ( CHS) addressing. 
+[LBA] is a addressing scheme for HardDisk sectors that uses a single number starting at . It supersedes the classic [ CHS] addressing. 
  
-LBA addresses can be 28 bit or 48 bit wide. If your disk has 512 byte sectors (fairly common), a 28 bit LBA device can address 128 GB of disk. Here's the maths:  
+[ LBA] addresses can be 28 bit or 48 bit wide. 
  
-<verbatim>  
- 512 byte sectors = 2^9 Bytes.  
-1 GB = 2 ^ 30 Bytes.  
+With the common 512 byte sector size, 28 bits are somewhat limiting:''''  
  
-2 ^ 28 * 2 ^ 9 Bytes = 2 ^ 37 Bytes = 137438953472 Bytes  
-2 ^ 37 Bytes / 2 ^ 30 = 2 ^ 7 GB = 128 GB  
- </verbatim
+ 512 byte sectors = 2<sup>9 </sup > Bytes  
  
-Disk manufacturers actually use GiB (10^9, as opposed to 1024^3):  
- <verbatim >  
- 2 ^ 37 bytes = 137438953472 Bytes = 137.43 GiB  
- </verbatim
+ 2 <sup >28</sup> * 2<sup>9</sup> Bytes = 2<sup>37 </sup > Bytes = 137,438,953,472 Bytes  
  
-This is the reason for older OS 's or controllers failing to detect a large disk correctly.  
+That is 128[GiB]:'''
  
-48 bit LBA offers much larger disks:  
+ 1 [GiB] = 2<sup>30</sup> Bytes  
  
-<verbatim >  
-2 ^ 48 * 2 ^ 9 Bytes / 2 ^ 30 = 2 ^ 27 GB = 134217728 GB = 128 EB  
- </verbatim
+ 2 <sup>37</sup > Bytes / 2<sup> 30</sup> = 2<sup>7 </sup > [GiB] = 128 [GiB]  
  
-----  
+Disk manufacturers actually use [GB], btw:''''  
  
+ 1 [GB] = 10<sup>9</sup> Bytes  
+  
+ 2<sup>37</sup> Bytes / 10<sup>9</sup> = 137.43 [GB]  
+  
+This is the reason for older OperatingSystem~s or controllers without 48 bit [LBA] support failing to detect a large contemporary disk correctly.  
+  
+48 bit [LBA] offers much larger disks:''''  
+  
+ 2<sup>48</sup> * 2<sup>9</sup> Bytes / 2<sup>30</sup> = 2<sup>27</sup> [GiB] = 134,217,728 [GiB] = 128 EB  
+  
+----  
 Part of CategoryHardware