How to modify the startup time of grub in ubuntu

This article is about how to modify the startup time of grub in ubuntu. I think it is very practical, so I share it with you. I hope you can get something after reading this article.

The start-up time of online query modification grub is basically modification / etc/default/grub

# comment out GRUB_HIDDEN_TIMEOUT=0#GRUB_HIDDEN_TIMEOUT=0# and modify GRUB_TIMEOUT = 0 GRUB_TIMEOUT = 0

Then run update-grub to regenerate / boot/grub/grub.cfg. However, it doesn't work. You still have to wait 30 seconds.

View / boot/grub/grub.cfg

# BEGIN / etc/grub.d/00_header # #... function recordfail {set recordfail=1 # GRUB lacks write support for lvm, so recordfail support is disabled.}... if ["${recordfail}" = 1]; then set timeout=30...if [$grub_platform = efi]; then set timeout=30...### END / etc/grub.d/00_header #

As you can see from the above configuration, the timeout is 30 seconds for lvm partitions and 30 seconds for EFI startup. Priority EFI > LVM.

Then take a look at the / etc/grub.d/00_header script that generated this configuration.

... Cat