Bootable Ucsinstall Ucos Unrst 8.6.2.10000-14.sgn.161 2021 -

This stands for . This signifies that the underlying Linux-based OS is included in the package. When you boot from this ISO, you are installing the entire OS layer, effectively wiping the drive and starting fresh (or overwriting the existing partition during an upgrade).

: Use 7-Zip to extract the entire contents of your Cisco ISO into a temporary folder, for example, C:\CUCM_Build . Bootable UCSInstall UCOS UNRST 8.6.2.10000-14.sgn.161

After the wizard finishes, you have a brand new, empty 8.6.2 server. You now have two paths: This stands for