Using DRD Activate and Deactivate to Recover from Boot Problems

On a PA-RISC system
On a PA-RISC system, the system administrator issues “ioscan –fnkC disk” and notes the value
in the “H/W Path” column for the drd clone.
Figure 12 shows a sample of ioscan output on a PA-
RISC system. The right-most field, “Description” has been deleted to make
Figure 12 easier to read.
Figure 12 ioscan -fnkC disk Command Output on a PA-RISC system (Description field deleted)
Class I H/W Path Driver S/W State H/W Type
======================================================================
disk 1 0/0/1/1.15.0 sdisk CLAIMED DEVICE HP
/dev/dsk/c1t15d0 /dev/rdsk/c1t15d0
disk 0 0/0/2/1.15.0 sdisk CLAIMED DEVICE HP
/dev/dsk/c3t15d0 /dev/rdsk/c3t15d0
In the event that the administrator wants to boot the drd clone, the boot can be interrupted when the
following messages are issued: “Processor is booting from first available device.
To discontinue, press any key within 10 seconds.” The menu in
Figure 13 is then
displayed.
Figure 13 PA-RISC Boot Menu
---- Main Menu ----------------------------------------------------------
Command Description
------- -----------
BOot [PRI|ALT|<path>] Boot from specified path
PAth [PRI|ALT] [<path>] Display or modify a path
SEArch [DIsplay|IPL] [<path>] Search for boot devices
COnfiguration menu Displays or sets boot values
INformation menu Displays hardware information
SERvice menu Displays service commands
DIsplay Redisplay the current menu
HElp [<menu>|<command>] Display help for menu or command
RESET Restart the system
----
Main Menu: Enter command or menu >
The administrator enters “SEA” to initiate the search for boot devices. When the search is complete,
a menu similar to that in
Figure 14 is displayed.