21.3.2. UUID and Other Persistent Identifiers
If a storage device contains a file system, then that file system may provide one or both of the following:
These identifiers are persistent, and based on metadata written on the device by certain applications. They may also be used to access the device using the symlinks maintained by the operating system in the
boot -> ../../sda1 ) and
f8bf09e3-4c16-4d91-bd5e-6f62da165c08 -> ../../sda1) directories.