You can check the setting default boot entry for grub2 in etc default grub method below. This wont change the default entry in the grub menu, i. To change the grub boot menu order using grub customizer, go to the list configuration tab, select a boot menu entry and use the up and down arrows to change its position. However, to change boot parameters or any other parameters by using the eeprom command, you must become the root user.
Change default kernel in oracle linux 6 and 5 oracle linux 6 and 5 use the grub boot loader. Type sudo nano etcdefaultgrub in your terminal and press enterhave a look at the configuration file of grub which is given belowyou can change the default boot option by locating and entering the number on which an entry appeared in the boot menu of grub. Grub counts the kernel entries in the configuration file starting at 0. As you probably know, grub2 is default boot loader for most linux.
Starting with fedora 16, grub 2 is the default bootloader on x86 bios systems. Grub customizer, a graphical gtk interface to configure some grub 2 settings, can be used to change the default grub boot menu order without having to manually edit configuration files, like etcdefaultgrub. To change the default boot kernel, you modify the grub configuration file, etcnf. That means grub2 is considering the first entry values in your boot list as default. Grub customizer a new graphical grub 2 and burg settings manager, 2. This guide provides to change the default grub 2 entries as well as to change the timeout according to the user requirements on. If a custom file contains multiple entries, individual items may be removed and others retained. With such setting, the system always boots immediately on the default menu entry, and if the. If you want to use your second boot entry as default then change the value to 1, to use 3 rd entry change value to 2 and so on. In grub, the default boot menu entry was determined by the order of entries in bootgrubmenu. The entry may be identified by number starting from 0 at each level of the hierarchy, by title, or by id. It is better to use absolute paths when accessing to a file, as in the example above, especially when repairing a system. Here is how to permanently change the selected boot entry in grub2 so when the grub menu is displayed, the first menu entry wont be selected anymore and instead, youll be able to make grub automatically select a different entry, be it windows, a linux distribution or whatever.
This part comes from the complete tutorial about grub2 from the site dedoimedo, while i was searching for an help ive read his complete how to about grub2 and i really suggest to take the time to read it for a complete overview grub 2 has three main parts. How to setup boot password protection for grub2 entries. How to change the os boot order on the grub bootloader. Grub2submenus community help wiki ubuntu documentation. Change default bootloader from grub to windows youtube. Ubuntu and most other linux distributions now use the grub2 boot. In this guide we will see how to edit manually the grub 2 boot loader configuration file to change the default os you want to boot first. When options 1 or 2 are selected skip bootmenu or display a timeout respectively, see setting the menu timeout for more information, easybcd will automatically boot into the default os when turning on or restarting your pc. Grub2 is the most common bootloader for rhel 7 systems. Setting default entry in grub2 and grub systutorials. Grub 2 has replaced what was formerly known as grub i. Grub 1 allowed only plaintext passwords in configs, which is not a good idea.
If this variable is set, it identifies a menu entry that should be selected by default, possibly after a timeout see timeout. Grub is useful, but for some, the menu loads way too fast. This may be a number, in which case it identifies the nth entry in the generated menu counted from zero, or the title of a menu entry, or the special string saved. How to change default grub2 entries and timeout on centos. Safely boot multiple windows and linux systems on both gpt and mbr disks. The default bootloader in linux is called grub, and it will boot to linux by default. Additionally, if the grub timeout is way too slow, change it to three seconds for increased speed. Grub 2 is the boot loader that is used by all current linux distributions.
Lets say we want to edit the grub 2 menu a little, including the default selection, the timeout and other options. Oracle linux how to change default kernel oracle community. How to set grub to remember your last selected entry. You can now run grub2mkconfig to generate the grub config file. This guide provides to change the default grub 2 entries as well as to change the timeout according to the user requirements on respective enterprise linux that supports the grub2. We can select the default os to boot using this option. Supports both 64 and 32 bit efi firmware as well as bios. Using default entry identified with a number astonished me since it was introduction in grub. How to change grub2 menu timeout and default boot entry. Change grub default boot entry on linux mint sysinfo io. All modules are digitally signed for your security. This tutorial will show beginners how to change the default os entry in ubuntu 20.
This article is largely based on things to know about grub2 and is intended for those who. In this article, we would see how to change the default grub boot entry using cli. If you are running a windows machine that does not let you edit the efi firmware order, turn on secure boot and grub will not start windows is the only os that can be booted with this option. You can change the default boot target by changing the. How do i set the grub timeout and the grub default boot entry. Currently unable to change the default boot for kali linux 2 grub 2. As in previous grub 2 versions, the default boot option is set by a setting of the. How to changing the default boot entry in windows 10. If you set the value as 0, the first operating system in the grub boot.
Sets the default boot entry for grub for the next boot only grubrenderlabel. Is a helper program that prints the path of a grub device grubprobe. How to correctly set up the right grub 2 default menu entry. I wanted to have window xp always set as default at boot, i would set. With some version of grub2, the grub2set default method and the script below may not work. Replace grub with windows 10 bootloader on dualboot youtube.
This guide applies only to systems using grub aka grub legacy, where menu. Removing entries to remove a usercreated menu entry, remove the applicable file from the etcgrub. Grub customizer, for instance, allows changing icons and colors for grub installed to the local partition, new versions of grub for instance sometimes have different resources, like one version of grub comes, by default, with a debian logo next toabove a picture of the earth, another version had a dark maroonpurple background and white text. Changing the default boot entry neosmart knowledgebase. This entry is referred to as being the default entry and is special from the rest. Change default kernel boot with old kernel centosrhel. Using the id may be useful if you want to set a menu entry as the default even though there may be a variable number of entries before it. The file name etcg is a symbolic link to the g file, whose location is architecture dependent. So, the scenario is, im having two operating systems ubuntu and windows 7, installed on my computer. With some version of grub2, the grub2setdefault method and the script below may not work. If you have multiple operating systems or os versions on your computer, the option that grub chooses as the default is sometimes not the one you want. For upgrades of bios systems the default is also to install grub 2, but you can opt to skip bootloader configuration entirely.
Instead of changing the grub boot menu order, you can also change the default os default selected boot entry. Grub 2 allows to use hashed passwords with salt pbkdf2 is used, which is not cthulhu worshipers chant, but passwordbased key derivation function. Grub2 set windows as default os in dual boot with ubuntu. Changing the boot default in grub 2 how to change your default os. How to set default boot kernel on linux centos rhel 7. You can check the setting default boot entry for grub2 in etcdefaultgrub method below. This tutorial helps you with how to change the items in the bootloader.
Do not attempt to manually edit the boot menu because it is. Grub 2 boot menu basics and how to add a custom splash image. Change this number to anything that sounds like it would be more comfortable like ten or fifteen, for example. There are many situations that will result in a numbering change i. You may wish to change which os starts as default in the grub2. How to permanently change the selected boot entry in grub2. I swear last time i set this up i could use the grub loader on launch and tell it to set the default os.
One can set another grub record to be the default, using the grub2setdefault command, which will update the grub 2 environment file. Probe device information for a given path or device grubreboot. The option to change the default grub boot entry is available in grub. How to modify boot parameters by using the eeprom command. If you are using dmraid do not change this entry to saved or your. Modifying boot parameters on an x86 based system booting. The grub2 has advanced feature as well as some basic features that makes it effective on all enterprise grade linux. Change grub background grub customizer also allows you to change the grub background and other colors so that it looks nicer than it does. We have seen before a simple application for changing the default os at boot, you can check it here. Select windows entry and then use the up arrow button to take it to the top position. Manually addingremoving entries to grub 2 menu ubuntu. Edit etcdefaultgrub this file contains a few interesting options you may want to change, including the default selected entry, the default timeout and additional options.
Is there a command or way i can enter that from the grub load up screen. To change the order of a specific operating system, select the needed entry, then press the up or down arrow from the top panel. You can change the grub boot order by modifying the settings in the file etcdefaultgrub. The post describes changing the default kernel to a old kernel. Select an os entry as default from the dropdown box after predefined you may also change other settings. How to change boot orderset default boot os in ubuntu 14. In this guide, i will explain how to modify the grub boot loader menu on your server or desktop, how to add menu entries and add a custom splash screen image.
You can also refer to it by the etcg file which is a symbolic link. How to change the grub 2 default timeout and boot order. How to configure grub2 boot loader settings in ubuntu. A symlink to the grub2 config file should be present at etcg. The default directive specifies the kernel entry that grub should boot by default. Instead, use saved option to remember last chosen entry. The boot configuration when using grub 2 is in the bootgrub2g file. Super grub2 disk helps you to boot into most any operating system os even if you cannot boot into it by normal means. For example, the current default os in my system is linux. How to change the grub boot order or default boot entry in. Set windows 10 to the default boot entry operating system. You can either choose a predefined entry on the bootloader menu to be the default choice or the previously booted entry. How to change default boot order, and waiting time on linux multiboot duration.
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