I found a first solution. I checked in the downloaded *.iso file and was able to manually copy the grubx64.efi file to my usb drive.
It seems that my antivirus quarantined the file when i was creating the bootdisk in rufus. Is this something we can check for the future?
I now got to the desktop. Now need to find a way to get wifi working and a way to see if the battery and audio devices are recognized. There were some more error messages that flashed by so I'll perform another boot and try to get those messages.
I have added here the outputs of ifconfig and lspci (from the Live session)
bodhi@bodhi:~$ lspci
00:00.0 Host bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series SoC Transaction Register (rev 36)
00:02.0 VGA compatible controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Configuration Registers (rev 36)
00:03.0 Multimedia controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Imaging Unit (rev 36)
00:0b.0 Signal processing controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Power Management Controller (rev 36)
00:14.0 USB controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series USB xHCI Controller (rev 36)
00:1a.0 Encryption controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series Trusted Execution Engine (rev 36)
00:1f.0 ISA bridge: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCU (rev 36)
bodhi@bodhi:~$
bodhi@bodhi:~$ ifconfig wlan0
wlan0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether 38:a2:8c:aa:55:1c txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
(edit: I was able to get the wifi working by using this command: sudo systemctl restart network-manager and two more commands from the 'top answer' in
askubuntu.com/questions/528000/how-to-restart-the-network-manager-applet)My challenge now is how to get the audio devices and battery device recognized. I have posted in the Discord channel