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Boot system

As explained in Acing the CCNA Exam: Volume 2 Advanced Networking and Security

boot system image-path is a Cisco IOS configuration command that specifies the IOS image to load at the next boot.

boot system image-path is a Cisco IOS global configuration command that selects the IOS image loaded at the next boot. It is used when upgrading software or changing the configured boot image. section 8.3

Use the command as part of a controlled IOS image change:

  • Verify the selected next-boot image with show boot. section 8.3
  • Save the configuration with write memory, write, or copy running-config startup-config before reloading. section 8.3

How Acing the CCNA Exam: Volume 2 Advanced Networking and Security covers it

How deep it goes
Explains configuration, show boot verification, configuration saving, reload, and show version confirmation.
Examples
Uses Cisco switch commands selecting 15.2(7)E7 after replacing a 15.0(2)SE5 image.
What it assumes
Assumes access to Cisco IOS configuration mode and an IOS image available on device flash storage.
What you can do after
Operate/configure a Cisco device to boot a specified IOS image and verify the result after reboot.
How it connects
Connects IOS image upgrades with show boot, show version, configuration saving, reload, TFTP, and FTP.
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Related concepts

This explainer was generated by Manning's knowledge graph from the text of Acing the CCNA Exam: Volume 2 Advanced Networking and Security. The section links point to the parts of the book it draws on.