Super User Stack Exchange
Super User Stack Exchange

Questions tagged [grub2]

Grub2 is Grub version 2, a multiboot bootloader from the GNU project.

This is the second version of gnu wherein specific improvements were made.

524 questions
2
votes
0 answers

Does GRUB actually install an MBR?

I’m wondering if I need to use some other utility to actually write the MBR to disk, or if GRUB writes an actual MBR to disk? The wording in the GRUB2 documentation is not entirely clear on the point.
Duke Dougal
  • 399
2
votes
1 answer

Boot different OS if booted via Wake on LAN with GRUB

I have a PC running Windows and Linux. I want the Windows system to be the default system because this PC is mainly used for gaming. I do, however, occasionally use it as my remote development box. I've enabled WOL for it, so it will boot as soon…
Pascal
  • 121
2
votes
1 answer

How do I determine the partition number for a extended partition in grub 2

I'm currently trying to boot haiku as part of a triple boot with windows XP and lubuntu. I'm using grub2 from lubuntu as my bootloader since ntldr only does XP, and haiku's bootloader only ever seems to work when you format an entire disk for it.…
Journeyman Geek
  • 129,178
1
vote
0 answers

Grub 2, switch os when restarting

I dual-boot with Windows and Ubuntu. Usually, when I restart my computer, it is to switch os. Is there a way to tell it to Grub so that it preselects the right os in its menu when I restart my computer? Currently, I have the following two lines in…
Gradient
  • 561
1
vote
1 answer

Broken Grub2 config file symbolic links due to unmountable EFI on a RAID. How can I fix this?

When I cd /grub.d OS doesn't go to directory grub2.cfg and grub2-efi.cfg are showing as red. This means Grub2 is broken. This is on a Fedora distro. lrwxrwxrwx. 1 root root 22 May 2 2018 grub2.cfg -> ../boot/grub2/grub.cfg lrwxrwxrwx. 1…
mister mcdoogle
  • 179
0
votes
0 answers

Grub2 insists on including zfs module when it does not exist

I'm creating a bootloader using grub2-install, it works fine but it keeps emitted this extraneous message: Booting `SUSE Linux Enterprise High Performance Computing 15 SP5' Loading kernel ... error: ../../grub-core/fs/fshelp.c:258:file…
rusty
  • 125
0
votes
0 answers

Grub 2 grub-mkconfig missing

I installed grub2 for windows. But I cannot find grub-mkconfig.exe to generate grub.cfg file.I tried to find it in installer directory. But did not find the command. Only there was a file called grub-mkconfig_lib
Riyadh Kabir
  • 79
0
votes
1 answer

grub2 equalivent of bash $(cat /path/to/file)

I use grub2 to boot a Linux system. This Linux system requires a very long kernel cmdline, stored in a file at the path of /cmdline. This system does not have a grub configuration file, so I have to use the grub shell to boot the system manually…
Billy
  • 147
0
votes
0 answers

Deleting one of the OSs in a multiboot arrangement

I am multibooting Windows 7, Linux Mint and Suse Leap on one computer, having installed these OSs in that order and each into separate partitions. Since Suse was the last OS to be installed, the Grub2 boot loader configured under Suse is the one…
Stephen
  • 1