(Optional) Configuring the GRUB Timeout

Scenario

For Ubuntu 14.04 or Debian, you need to set the GRUB timeout to prevent system login failures caused by unexpected power-off. For other OSs, skip this section.

Procedure

1. Use the vi editor to open the /etc/default/grub file and appendix GRUB_RECORDFAIL_TIMEOUT=10 to the GRUB_CMDLINE_LINUX field.

   GRUB_DEFAULT=0
   #GRUB_HIDDEN_TIMEOUT=0
   GRUB_HIDDEN_TIMEOUT_QUIET=true
   GRUB_TIMEOUT=2
   GRUB_DISTRIBUTOR='lsb_release -i -s 2> /dev/null || echo Debian'
   GRUB_CMDLINE_LINUX_DEFAULT=""
   GRUB_CMDLINE_LINUX="console=tty0 console=ttyS0"
   GRUB_RECORDFAIL_TIMEOUT=10

2. Run the following commands to update the configuration:

   grub-mkconfig -o /boot/grub/grub.cfg