You will need to schedule some downtime to bring both switches down. Perform the option 12 from boot menu while the secondary switch is powered off. Once the desired master is powered back up, then power the secondary switch on again.
Hello, We have a pair of 8164's (running v5.1.0.1) that were setup by a previous admin.  We can't find a documented password anywhere, and RADIUS wasn't setup.  We are trying to reset the password.  When we chose option 12 from the boot menu, the switch loaded up and became the secondary switch in the stack.  However, this means we can't access the cli on this switch to reset the password.  I can't easily reset the other switch, due to an incomplete wiring setup (the other switch has the only uplink). I've searched, but can't find a password reset procedure for stacked switches.  Will I need to reset the other switch and also put it in password recovery mode to pull this off? Thanks.
Reset password on stacked 8164