Cylinder, Head, Sector or CHS vs. Logical Block Addressing or LBA give you two ways to find data on a disk.

You’ll learn about these two methods in this episode because the terms come up now and then when talking about filesystems. They don’t really have anything to do with a filesystem itself. They describe two different ways to specify exactly where on a disk that information an be found.

For that reason, they’re used by filesystems. And you should at least be familiar with the ideas.

Listen to the full to hear one of my crazy examples where I compare CHS to book binding and then show how LBA is like a book’s page numbers.