"Solid-state drives are all the rage these days, but embedded systems have used solid-state devices for storage for quite some time. You'll find flash file systems used in personal digital assistants (PDAs), cellphones, MP3 players, digital cameras, USB flash drives (UFDs), and even laptop computers. In many cases, the file systems for commercial devices can be custom and proprietary, but they face the same challenges discussed below.
"Flash-based file systems come in a variety of forms. This article explores a couple of the read-only file systems and also reviews the various read/write file systems available today and how they work. But first, let's explore the flash devices and the challenges that they introduce..."
