The debug output for the above commands is displayed to the console and/or the IOS logging buffer.
Note
debug installer all should typically be enabled when troubleshooting installation related problems
Examples
To enable all installer debugs, perform the following:
infra-p2-3#debug installer all
All installer debugging is on
Related Commands
Command
Description
debug iosd issu
Use this command to enable all the debugs inside the IOS issu_iosd and iosvrp_issu_upgrade subsystems
debug iosd issu
To enable all the debugs inside the IOS issu_iosd and iosvrp_issu_upgrade subsystems, use the
debug iosd issu command in Privileged EXEC mode. To disable debugging use the
no form of the command.