: Modifying the ISO can cause the media check to fail during the installation process. You may need to skip the media test to proceed with the installation.
By default, many "upgrade" ISOs downloaded from the Cisco website are . To use this file for a fresh installation on a virtual machine (such as VMware ESXi), you must manually modify it to be bootable. Understanding the ISO Type bootable ucsinstall ucos unrst 8621000014sgn161
: Stands for Unified Communications Operating System (the Linux-based platform CUCM runs on). 8.6.2.10000-14 : The specific build version (8.6.2). : Modifying the ISO can cause the media
The asset or serial tag (like your example 8621000014sgn161 ) should appear. If your actual system uses that ID, you can now register it with Cisco Smart Licensing and apply the correct support entitlements. To use this file for a fresh installation
: Go to the Bootable menu in UltraISO, select Load Boot File , and choose the isolinux.bin you just saved.