Definition
A magnetic disc is a circular storage medium, kind of like a digital vinyl record 💿, used for storing electronic data. Data is recorded and accessed by magnetizing spots on the disc's surface. Think of it as a filing cabinet where information is organized in concentric circles called tracks. Unlike sequential access methods, it allows for random access, meaning any piece of data can be retrieved quickly. It's like skipping to your favorite song on a playlist instead of listening to the whole album linearly. While largely replaced by solid-state drives (SSDs), magnetic discs played a crucial role in computing history. It was the OG of storage.