###### Procedure

1. Open `/etc/default/grub` in nano, e.g.

        nano /etc/default/grub

2. Modify the line `GRUB_CMDLINE_LINUX_DEFAULT` to include `console=ttyS0`, e.g.

        GRUB_CMDLINE_LINUX_DEFAULT="quiet console=ttyS0"

3. Update grub via the `update-grub` command

4. If using Proxmox, be sure to add a hardware serial port

    !!! info "Note"

        If done correctly, your Debian virtual machine in Proxmox will have a text console accessible via xterm.js

###### Sources

<http://notesofaprogrammer.blogspot.com/2020/05/enabling-serial-console-on-debian-linux.html>