System Administration Guide: Devices and File Systems

ProcedureHow to Reset a USB Device

If a USB device behaves erratically, use the cfgadm command to reset the device, which logically removes and re-creates the device.

  1. Become superuser.

  2. Make sure that the device is not in use.

  3. Reset the device.

    For example:

    # cfgadm -x usb_reset -y usb0/4.7
  4. Verify that the device is connected.

    For example:

    # cfgadm usb0/4.7
    Ap_Id                  Type         Receptacle   Occupant     Condition
    usb0/4.7               usb-storage  connected    configured   ok