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.