A user may assign a boot name to a logical drive, to simplify its identification. A boot name is a unique name which identifies the logical drive for booting, and is independent of the logical drive letter assigned to the drive by the currently active operating system. The boot name is only recognized by the Boot Manager.
Boot names are useful in the event of a hardware reconfiguration where additional fixed disks are added to the machine. Boot names assigned to logical drives on the original fixed disk will not change and will still identify the same area on the disk, unlike the logical drive letters which may change due to the reconfiguration.