I have a Catalyst 4507 Switch with dual supervisor engine module. In my configuration, i have the commands below:
However, when a enter the command show slavebootflash:, i got this error message
%Error show slavebootflash: (Error Sending Request)
You call is slave when you are on active sup but when you are local to that sup you call it bootflash. So as you confirm your standby sup is in rommon , please console into the standby sup and issue a command "dir bootflash:"?