minor number Definition minor number Device numbering A minor number specifies the device or type of device to use. COHERENT uses the minor number of a given device in a driver- specific manner. For example, a hard-disk driver may use the minor number to select a disk drive and partition. Every COHERENT device has a device number associated with it. It is of type dev_t, as defined in <sys/types.h>. The macro minor() in <sys/stat.h> extracts the minor number from a given device number. ***** See Also ***** device drivers, major number, stat.h COHERENT Lexicon Page 1