Thanks for you fast response, John. This helped a lot. > If you see the option the Debian installer page (Graphical install', > 'install', 'install with speatch') press escape use the below at the > boot prompt
Here was the problem. I do not see those options. The output waits after 'ISOLINUX 6.04 20190226 EHDD'. In retrospective it seems quite obvious since the installer does not yet know how the serial settings are. The fact that I had connected a keyboard with a Swiss german layout did not help either. But imagining using a US keyboard worked. The 'vga=none' part seems to be important too. Otherwise I received "Undefined video mode number: 314" Although after the installation finished and I booted into the newly installed system. I get the error message: Loading Linux 4.19.0-9-amd64 ... vga=none is deprecated. Use set gfxpayload=text before linux command instead. error: unrecognized number. Loading initial ramdisk ... error: you need to load the kernel first. Press any key to continue... Therefore I used the following as the install options after hitting ESC: install console=ttys0,115200n8 gfxpayload=text Thanks again a lot for your quick and competent reply. BR, Ramon