System Setup and Configuration
3.8 Firmware Commands and Utilities Used in System Configuration
Use the OpenVMS DCL command SHOW DEVICE DI to check the protection
status of the drive. A write-protected drive will show a device status
of ‘‘Mounted wrtlck’’. Refer to your OpenVMS documentation for more
information on using the MOUNT Utility.
Caution
When you dismount then mount the device again, it will no longer be
write-protected.
3.8.4.2 Hardware Write-Protect for EF/RF ISEs
The hardware write-protect provides a more permanent write-protection than
the software write-protect in that, once you hardware write-protect an EF
/RF, it remains write-protected, regardless of the availability of the operating
system or if the system is powered-down. In addition, a hardware write-protect
cannot be removed using the MOUNT command. The hardware write-protect
simply provides the same degree of write-protection available to EF/RF-series
ISEs that have a Write-Protect button.
You should consider hardware write-protecting an EF/RF in the following
situations:
• If you want to write-protect an EF/RF ISE when the OpenVMS operating
system is not available, such as before running the MicroVAX Diagnostic
Monitor (MDM).
• If you want to ensure that an EF/RF remains write-protected, since the
hardware write-protect cannot be removed using the OpenVMS command
MOUNT and will remain in effect even if the operating system is brought
down.
You can hardware write-protect an EF/RF from the OpenVMS operating system
or through firmware commands entered at the console prompt (>>>). Use the
following instructions:
1. Access the Diagnostic and Utility Program (DUP) driver for the device you
want to write-protect.
• To access the DUP driver from console mode:
a. Enter console mode by pressing the Halt Button or powering up
the system with the Break Enable/Disable switch set to enable (up,
position 1).
System Setup and Configuration 3–47
