Ubuntu Grub2启动上一次正确启动的内核

Ubuntu Grub2启动上一次正确启动的内核

让Ubuntu Grub2 引导上一次正确启动的内核，需要设置两个变量，如下:

/etc/default/grub

GRUB_DEFAULT=saved
GRUB_SAVEDEFAULT=true

然后运行update-grub命令。

参考

Saved
Saving an OS can be achieved by running sudo grub-set-default ifGRUB_DEFAULT=saved is set in /etc/default/grub. It may also be saved if GRUB_SAVEDEFAULT=true is also set in /etc/default/grub. In this case, the default OS remains until a new OS is manually selected from the GRUB 2 menu or thegrub-set-default command is executed.