The Diamond Linux-TT is a desktop Linux distribution based on the Stable version of Debian.
Stable version of Debian means better safety and no problems with updates.
The distribution uses the desktop KDE Plasma with the goal of making the operating system's interface look very familiar to its former users Windows.
Thus, Diamond Linux-TT distribution means:
• Linux operating system type Windows
• Operating system in 15 minutes
• Linux that does not require special knowledge or skills
• Free operating system for home and office use
Instructions installationς
https://www.linux-tt.com/help/
You can download the ISO from here