A quick one and hopefully you don’t get to see this moving forward.
Long time ago Cisco used to provide images on CCO that were divided in 2 parts, for upgrades and patches, I started working with those images since everybody started migrating from older versions to 9.x which is when I officially working as a consultant.
How to join or combine these 2 ISO image?
Windows:
coby /b UCSInstall_UCOS_6.1.3.1000-16.sgn.iso_part1of2+UCSInstall_UCOS_6.1.3.1000-16.sgn.iso_part2of2 UCSInstall_UCOS_6.1.3.1000-16.sgn.iso
Linux:
cat UCSInstall_UCOS_6.1.3.1000-16.sgn.iso_part1of2 UCSInstall_UCOS_6.1.3.1000-16.sgn.iso_part2of2 > UCSInstall_UCOS_6.1.3.1000-16.sgn.iso
A more in depth conversation about this can be found at https://supportforums.cisco.com/discussion/10595801/combining-iso-files-cucm-6
About the Author:
Andres Sarmiento, CCIE # 53520 (Collaboration)
With more than 13 years of experience, Andres is specialized in the Unified Communications and Collaboration technologies. Consulted for several companies in South Florida, also Financial Institutions on behalf of Cisco Systems. Andres has been involved in high-profile implementations including Cisco technologies; such as Data Center, UC & Collaboration, Contact Center Express, Routing & Switching, Security and Hosted IPT Service provider infrastructures.