How to set grub to remember your last selected entry. You will need to change add the following two lines in the grub config. This means when you load windows or any operating system, and it restarts, itll load it again. Grub2 the grand unified bootloader version 2 is a replacement for the original grub boot loader, now referred to as grub legacy. In case you want to speed up the boot time, you can change the number accordingly. It supports windows 10, windows 8, windows 7, vista and xp. We can add icons to the specific operating systems. Ubuntu and most other linux distributions now use the grub2 boot loader. All the files for grub2win reside on the windows c. Debian details of package grubcustomizer in stretch.
In red hat enterprise linux 7, if grubby is invoked manually without specifying a grub 2 configuration file, it defaults to searching for etc grub2. Allow make settings like default operating system, kernel params, background image, text colors, etc. Grub customizer is useful for customizations and recovering actions over. The default bootloader in linux is called grub, and usually, it will boot to linux by default. Use this guide if you have multiple partitions and operating systems on your computer and want to change the default operating system that will boot up when you turn on your computer. How to change the grub 2 default timeout and boot order. This page describes the new file structure and details how to the user can change the default settings used to create the boot menu. How to change grub2 menu timeout and default boot entry. Change grub default boot entry on linux mint sysinfo io. It is nothing but an amount of time after which the grub automatically boots default operating system. It works most of the time but its complexity and structural distance from grub legacy make debugging and customization nearly impossible. How to decrease the linux boot speed using grub ask. This tutorial shows you how to easily change grub boot order to make windows as default os in windowslinux dual boot with the help of grub customizer many people prefer to install linux in dual boot mode with windows.
Grub customizer is useful for customizations and recovering actions over any linux distribution. How to change the os boot order on the grub bootloader. Allow one to change the installed operating system by running on a live cddvd or from an os inside a flash drive. Grub 2 is the default efimode boot loader for many distributions, including current releases of ubuntu, opensuse, and fedora. If we prefer windows to be the default, though, or even some other linux distribution or operating system, its quick easy to change the grub boot order. How to set default boot kernel on linux centos rhel 7. The configuration change we made allows the grub set default and grub reboot commands to be used at any time. 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. Therefore, grub 2 is usually easy to install and use from such distributions. Reinstalling the grub boot loader the tao of debian.
Picking a theme your first task is to pick a theme to use for your grub menu. Run grub set default or grub reboot with sudo with the number of the menu item to boot the first item is 0. This arch wiki article has a good collection of vendorspecific uefi implementations and their details, but you need to remember this is an arch linux specific page, so some commands might need to be changed for debian. To change the default layout, we need to set the default based on the name or title. Also, you can set the time to the default boot option.
Grub version 2 is the default boot loader for fedora and ubuntu. As you may know, grub customizer is a nice application, that allows the user to edit the menu entries from the grub booting screen, set the default operating system, change the installed os via a livecd. Protecting grub 2 with a password red hat enterprise. Now to change the boot speed, you need to customize the configurations file. Grub2win is a tool that lets you boot grub2 from your pcs efi firmware or mbr. This way, even if an entry is shown as last in the grub boot. When booting, grub2 still gives me a page for 10 seconds that shows all three oss and allows me the opportuniy to arrow dow to one to boot into it, but it has ubuntu set as the default os, and my wife wants vista as default. Linux systems use some type of boot loader which is especially needed if the system is used to boot to more than one operating system os. During this time, you can either choose any of the operating systems to boot or leave it be to automatically boot. Suppose you changed the grub config file etc default grub to change the default boot order or reduce the default boot time. Supports both 64 and 32 bit efi firmware as well as bios. How to change default grub2 entries and timeout on centos.
Safely boot multiple windows and linux systems on both gpt and mbr disks. On debian sudo apt install grub customizer on fedora. Nano editor is the best application to edit the grub. How to change grub boot order in linux mint ubuntu. Change boot order in windows linux dual boot with grub. Grub2 change boot order from command line linuxsecrets home. We can select the default os to boot using this option. As long as debian used what is now called grub legacy the lenny os as opensuse11. How to change default boot order, and waiting time on linux multiboot duration. Your changes wont take into effect unless you update the grub. Grub 2 s method of building the grub menu is vastly different from grub 0. The gnu grand unified bootloader grub is only one bootloader available for linux. The grub2 setpassword tool was added in red hat enterprise linux 7. There could be a number of scenarios when you need to update grub.
How to configure grub2 boot loader settings in ubuntu. The grub 2 configuration file is located at boot grub grub. On the left, you can find options to change the background color, the text color, highlighted text color, highlighted background color, etc. You may wish to change which os starts as default in the grub2 bootloader. Well, that is not the case because somebody can easily change your user password using grub thus compromising the security of your system. You should modify or add to those files to configure grub 2. These allow you to change the default boot item permanently or only for the next boot, respectively. We can add a highlighter to the selected item in the menu so it is more than simply highlighted. Thanks for any help, whitehat aug 29, 20 once booted from the rescue disk, you can execute the grub2 install command to reinstall the grub2 boot image to the metadata area of your hard disk.
The result is users load windows, updates, and find themselves in linux or another installed operating system thanks to grub s terrible default settings. If youve booted into ubuntu, you can change the boot order via two ways. Instead of changing the grub boot menu order, you can also change the default os default selected boot entry. Change grub default bootup option linux cli youtube. Grub customizer also allows you to change the grub background and other colors so that it looks nicer than it does. Then edit etc default grub and make sure you have a line like. This is in contrast to previous versions of red hat enterprise linux, where boot entries needed to be manually specified in the etc grub. We can also add a timed progress bar for the countdown to when the default os is chosen. Fortunately reinstalling the grub bootloader is rather straightforward, and quick. Running your linux os and think you have secured it with user password to restrict access. Dualboot or even multiboot ubuntu with other operating systems. Starting with fedora 16, grub 2 is the default bootloader on x86 bios systems. Grub grand unified bootloader is the default bootloader for linux mint, ubuntu, and a host of linux distributions.
This guide applies only to systems using grub aka grub legacy, where menu. How to protect grub with password on debian, ubuntu and. You can change its settings to select a default operating system, set a background image, and choose how long grub counts down before automatically booting the default os. It also allows you to customize the look of your grub menu including changing the background and the fonts of your entry. Super grub2 disk helps you to boot into most any operating system os even if you cannot boot into it by normal means. Type sudo nano etc default grub 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. All modules are digitally signed for your security. How to change the grub boot order or default boot entry in.
Grub customizer is a great application, it allows you to add or edit menu entry and change the default os boot with gui. Grub2 is the default boot loader for all enterprise linux 7. After debian installation, how to add grub entries for newother bootable disksinstallations. Here there is a little video tour in order to discover most of super grub2 disk options. After debian installation, how to add grub entries for new. Many guides for changing the default operating system for grub2 to boot involve setting the number indicating where in the list that os appears unfortunately, when kernel updates are released for ubuntu they shift everything down two places and your default os therefore changes. Change default bootloader from grub to windows youtube. Since grub2 mkconfig and osprober cannot estimate which operating system, of those it finds, is to be marked as default, we usually are unable to predict the order of the entries in boot grub2 grub. Make windows the default operating system in grub2 even. Setting default entry in grub2 and grub systutorials. Debian details of package grubcustomizer in buster.
Assuming you already have an encrypted system as setup by debian installer. To specify which kernel or operating system should be loaded first i. Download grub2 packages for alt linux, centos, debian, fedora, mageia, netbsd, openmandriva, opensuse, pclinuxos, solus, ubuntu. It enables, for example, changing grub 2 menu entries to specify what arguments to pass to a kernel on system start and changing the default kernel. When we are dualbooting with windows, linux sets itself as the default boot choice. If you set the value as 0, the first operating system in the grub. Download this simple windows program and instructions that help you get grub2 booting quickly. If you install linux in efi mode and if the os installer configures grub 2 properly, it is likely to work adequately.
Some of them use linux as their primary os while some prefer windows as their primary os. For example, the current default os in my system is linux. Grub2 change boot order from command line linuxsecrets. Making persistent changes to a grub 2 menu using the.