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How do I permanently change grub prefix?
- The process to do that is simple. on start menu, select run and type msconfig.
- set boot=(hd0,msdos6)
- set prefix=(hd0,msdos6)/boot/grub.
- insmod normal.
- normal.
- sudo update-grub.
- sudo grub-install /dev/sda.
- grub rescue> ls.
How do I set grub bootloader as default?
5 Answers. 2) Then run boot-repair by sudo boot-repair and use “Recommended repair”. Then boot-repair will scan boot paths and correct them and update your grub configuration and set grub as the default bootloader of your system. efi expects the default boot loader to be /efi/boot/bootx64.
What is set prefix in grub?
15.1. 36 prefix This is normally set by GRUB at startup based on information provided by grub-install . GRUB modules are dynamically loaded from this directory, so it must be set correctly in order for many parts of GRUB to work.
How do I change the default grub in etc?
Fixing reboot/shutdown freezes Open the file with gksudo gedit /etc/default/grub (graphical interface) or sudo nano /etc/default/grub (command-line). Any other plaintext editor (Vim, Emacs, Kate, Leafpad) is fine too. Find the line that starts with GRUB_CMDLINE_LINUX_DEFAULT and add reboot=bios to the end.
What is the command for grub rescue?
These are the commands that can be used when you enter the GRUB 2 terminl mode by pressing “c”. configfile (Load a GRUB 2 configuration file such as grub. cfg; configfile (hd0,5)/boot/grub/grub.
How do I change grub settings?
It’s automatically created by running the update-grub command as root — in other words, by running sudo update-grub on Ubuntu. Your own GRUB settings are stored in the /etc/default/grub file. Edit this file to change GRUB2’s settings. Scripts are also located in the /etc/grub.
Where does GRUB2 find its configuration file in EFI?
We have been told that in grub2 the configuration file is /boot/grub/grub.cfg. But when there are boot problems grub2 might end up in a command prompt (aka emergency shell) without any error message.
How to SET DEFAULT entry in GRUB2 and Grub?
You can check the “Setting default boot entry for grub2 in /etc/default/grub” method below. The quick method: download the grub2-select. bash and run and choose the boot entry. To view the script, please check it on github. Following is the manual way and what the grub2-select.bash script does.
How to re-generate GRUB2 Regen cfg.bash script?
Update on Apr. 29, 2015: updated posts with support to both BIOS and UEFI based Linux systems; suggest the grub2-regen-cfg.bash script for re-generating grub2 config file. Eric is a systems guy. Eric is interested in building high-performance and scalable distributed systems and related technologies.