What is the command sequence to force a Cisco Nexus 6000 switch to boot using the golden BIOS image?
A. Press Ctrl-Shift-6 within 30 seconds of when power is supplied to the switch.
B. Press Ctrl-] within 2 seconds of when power is supplied to the switch.
C. Press Ctrl-] within 30 seconds of when power is supplied to the switch.
D. Press Ctrl-Shift-6 within 2 seconds of when power is supplied to the switch.
You can force the switch to bypass the upgradeable BIOS and use the golden BIOS instead. If you press Ctrl-Shift-6 within two seconds of when power is supplied to the switch, the golden BIOS will be used to launch the kickstart image, even if the checksum of the upgradeable BIOS is valid.
From
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus6000/sw/fundamentals/6x/b_6k_Fund_Config_6x/b_6k_Fund_Config_602N11_chapter_010.html