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Reload

As explained in Acing the CCNA Exam: Volume 1 Fundamentals and Protocols

The Cisco IOS reload command restarts a network device.

The Cisco IOS reload command restarts a network device. Because restarting is intrusive, reload is unavailable in user EXEC mode and requires privileged EXEC mode. section 5.2.1

Use reload operationally as follows:

  • Enter enable to move from the hostname> prompt to the hostname# privileged EXEC prompt. section 5.2.1
  • Enter reload and confirm the prompt when ready; IOS reports that the reload was requested. section 5.2.1
  • To restore factory-default behavior, erase startup-config first, then restart with reload. section 5.3
Router> enable                                                             #1
Router# reload                                                             #2
Proceed with reload? [confirm]                                             #3
%SYS-5-RELOAD: Reload requested by console. Reload Reason: Reload Command. #4
#1 Enters privileged EXEC mode
#2 Uses the reload command again
#3 Hit enter to reload the device.
#4 A message indicates that the device will reload.

CLI output shows the required mode change, confirmation prompt, and reload status message. section 5.2.1

Incorrect mode

Router> reload produces an IOS error. After enable, Router# reload works and displays Proceed with reload? [confirm]. section 5.2.1

How Acing the CCNA Exam: Volume 1 Fundamentals and Protocols covers it

How deep it goes
Explains mode restrictions, confirmation, output, and factory-default consequences without detailing reboot internals.
Examples
Uses Router> and Router# CLI prompts, an invalid-mode error, a confirmation prompt, and a reload status message.
What it assumes
Assumes CLI access and teaches the distinction between user EXEC and privileged EXEC modes through enable.
What you can do after
Operate/configure a Cisco IOS device by restarting it from privileged EXEC mode and confirming the action.
How it connects
Connects privileged EXEC mode, enable, startup-config, running-config, and factory-default configuration.
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