During the boot process of Cisco devices runningNX-OS, pressingCtrl-Cat the right time will interrupt the boot sequence and bring the system to theboot loader or ROMmon mode(commonly referred to as the boot prompt).
This allows a technician to perform low-level operations such as recovering passwords, specifying an alternate boot image, or performing diagnostics.
Other options (Ctrl-X, Ctrl-Z, Ctrl-1) are not used for interrupting the boot process in Cisco NX-OS platforms.
[Reference:Supporting Cisco Devices for Field Technicians (FLDTEC) – Cisco IOS Software Basics, ===========]
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