File: //etc/default/grub.d/50-cloudimg-settings.cfg
# Windows Azure specific grub settings
# CLOUD_IMG: This file was created/modified by the Cloud Image build process
# Set the default commandline
GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX console=tty1 console=ttyS0 earlyprintk=ttyS0 nvme_core.io_timeout=240"
GRUB_CMDLINE_LINUX_DEFAULT=""
# Set the grub console type
GRUB_TERMINAL=serial
# Set the serial command
GRUB_SERIAL_COMMAND="serial --speed=9600 --unit=0 --word=8 --parity=no --stop=1"
# Set the recordfail timeout
GRUB_RECORDFAIL_TIMEOUT=30
# Set the grub timeout style
GRUB_TIMEOUT_STYLE=countdown
# Wait briefly on grub prompt
GRUB_TIMEOUT=1