Problems with installation of HA on old PC

Installation
1

Hello,

I’m trying to install HA on an old PC following this procedure : Generic x86-64 - Home Assistant

I have copied Ubuntu onto a USB device and started my PC. There I have chosen for “Try Ubuntu” and I get live desktop.

But than…

I open firefox and download Balena Etcher. When I now try to open Balena Etcher I get this error : “No Apps available” “No apps installed that can open “balenaEtcher-1.10.2-x64.AppImage”. You can find more applications in Software”.

What should I do ?

2
3

Thank you, but…

Step 2 Extract the zip file : instead of “Extract here” I get “Compress…”

So I went directly to step 3 to change the properties of that file I have. But then step 4 want launch when I double click on it. So I selected “Open with Other application” - Archive manager, but get an error "Could not open “balenaEtcher…” - Archive type not supported.