FSD

fsd (often capitalized as FSD) is an acronym used in multiple fields and can refer to several unrelated concepts. The exact meaning depends on the context, with automotive technology and computing among the most common domains.

In automotive technology, FSD commonly refers to Full Self-Driving, a suite of driver-assistance features developed by Tesla. FSD includes capabilities such as Navigate on Autopilot, Auto Lane Change, and Smart Summon. It is marketed as a level of autonomy beyond standard driver assistance, but it does not make the car fully autonomous; the driver must remain attentive and ready to take control. Regulatory status and feature availability vary by jurisdiction and over time.

In computing, FSD can stand for File System Driver, a software component in an operating system that provides access to a particular file system. File system drivers translate high-level file operations into storage device I/O and are part of the OS kernel or a virtualization layer. Different devices and operating systems employ various FSD implementations, such as NTFS drivers on Windows or ext4 drivers on Linux.

Other uses exist in different domains; fsd may stand for various phrases appropriate to that field, such as organizational divisions or regulatory notices. Because the meaning is domain-specific, contextual cues should be used to determine the intended term.