/!\ read full version here : https://gist.github.com/ThomasBlt/bb0317b36575d99441ff32550e8e0d35
- In proxmox VM's Hardware > add > Serial
- Edit
/etc/default/grub
:
GRUB_CMDLINE_LINUX="console=tty0 console=ttyS0,115200n8"
- Update boot loader:
PATH=$PATH:/usr/sbin
update-grub