The following is for Windows

  1. Download Putty

  2. Choose serial and select the COM? you can find the com number from device manager under [Ports (COM & LPT)]

  1. Now that we have a serial connection go ahead and plug in the netinstall iso usb drive created using Rufus from Debian website

  2. hit tab to enter cmd to boot

  3. remove quiet after the --- and replace with console=ttyS0,115200n8 example below. This will make the installer use the serial port

    /install.amd/vmlinuz vga=788 initrd=/install.amd/gtk/initrd.gz — console=ttyS0,115200n8

  4. Then hit enter. it might complain about the display then hit space to continue anyway. then from there it should look like the normal debian install execpt thru putty and all ASCII

  5. Now everything should be done and you should be good to go :-)