It looks like I discovered the error.
The problems were my PC front usb ports.
After formatting the SD with rufus I got again an unreadable card, so I switched to motherboard ports.
And I managed to complete a fresh install of atmosphere without any problem (till now)...
The problems were my PC front usb ports.
After formatting the SD with rufus I got again an unreadable card, so I switched to motherboard ports.
And I managed to complete a fresh install of atmosphere without any problem (till now)...