forked from openkylin/docs
32 lines
1.3 KiB
Markdown
32 lines
1.3 KiB
Markdown
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# <center>How to add boot parameters to grub</center>
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#### <center>Author: OK</center>
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#### <center>2022-04-22 23:36:00</center>
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## How to add boot parameters to grub
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For grub2, ubuntu gives an official configuration file /etc/default/grub. Most of the grub2 settings can be done in this file, and the structure of this file is relatively simple and easy to modify. There is no need to change /boot/grub/grub.cfg or /etc/grub.d/ directly.
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Modifying /etc/default/grub requires only one simple command.
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sudo vim /etc/default/grub
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The following are the system defaults and the most common ways to modify the menu display time and default operating system.
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#If you change this file, run 'update-grub' afterwards to update
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#/boot/grub/grub.cfg.
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GRUB_DEFAULT=0 #Changing 0 to saved allows grub to remember which system was selected the last time it booted
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GRUB_HIDDEN_TIMEOUT=0
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GRUB_HIDDEN_TIMEOUT_QUIET=true
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GRUB_TIMEOUT="5" #Show the time to start the selection menu
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GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
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GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
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GRUB_CMDLINE_LINUX=""
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After the modification is complete, execute the following command.
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$ sudo apt-get install grub2-common //If you don't have the update-grub command, run this installation command first
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$ sudo update-grub //Generate the grub configuration file
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That's all.
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