| Generic Block Device Capability | 
 | =============================================================================== | 
 | This file documents the sysfs file block/<disk>/capability | 
 |  | 
 | capability is a hex word indicating which capabilities a specific disk | 
 | supports.  For more information on bits not listed here, see | 
 | include/linux/genhd.h | 
 |  | 
 | Capability				Value | 
 | ------------------------------------------------------------------------------- | 
 | GENHD_FL_MEDIA_CHANGE_NOTIFY		4 | 
 | 	When this bit is set, the disk supports Asynchronous Notification | 
 | 	of media change events.  These events will be broadcast to user | 
 | 	space via kernel uevent. | 
 |  |