A CDE Definition
Logical Block Addressing
(Logical Block Addressing) A method used to address hard disks by a single sector number rather than by cylinder, head and sector (CHS). LBA was introduced to support ATA/IDE drives as they reached 504MB, and Enhanced BIOSs in the PC translated CHS addressing into LBA addressing. Subsequent ATA specifications raised support to 8.4GB, 128GB and 128PB (petabytes), the latter capacity we hope never to reach on our home PC in many lifetimes.
Before/After Your Search Term
Terms By Topic
Click any of the following categories for a list of fundamental terms.