I’ve downloaded both

 

clear-5700-installer.img.xz

clear-6020-installer.img.xz

 

and written them to a 16Gb USB stick with the “xzcat … | dd “ command from the “creating a bootable USB …” page

 

 

My hardware is an HP EliteDesk 800  (4th gen core i7-4790)

 

 

On booting,  I choose auto-installation and get the messages

 

Starting installation

Creating partitions

Swupd done

 

Ister failed…, please check the log file

 

 

 

There’s no log file,   any clue as to why it is failing?

 

Thanks

 

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Jon