Media's writeup describes one specific use of logical block addressing. In general, a storage device that provides logical block addressing simply presents a contiguous sequence of numerically addressable blocks, generally starting with block 0 and progressing up through the integers one by one until the last block without concerning whatever is using that device with matters having to do with where physically that block may reside, and the block may in fact be moved behind the scenes. (A "block" is usually 512 bytes, but does not have to be.) The 528 Mb reference already seems dated, and as I write this, there are 80Gb drives in production, and soon, I have no doubt, a reference to an 80Gb drive will seem dated too. But LBA has been around far longer than 500Mb drives, and will be the same in concept for a long time to come.