Questions tagged [grub2-mkconfig]

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No grub screen when i start my system

no grub screen after installing ubuntu 18.04 it takes me straight to linux (i am a new person)
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0answers
34 views

grub.cfg not configured properly

I'm trying to give users the option to run memtest from a grub2 menu in a custom iso. I'd also like to give them the option to set screen resolution. Neither one works as currently configured. Grub....
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43 views

GRUB encrypted /boot fails to open after migration

I have a system that still boots legacy but has root on a NVMe drive, so it requires a USB drive to boot from and mount root. This USB drive is encrypted. Recently, the USB drive has started giving ...
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1answer
124 views

grub-mkconfig gives error in chroot environment

I'm trying to make a Debian installation manually from scratch to an external disk within a live Debian CD. I created a Debian Stretch rootfs via multistrap by following the instructions from here (...
2
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1answer
260 views

What is the correct way to handle default kernelopts in Fedora 31?

I'm running Fedora 31 and when I installed it (F29) I added the option mem_sleep_default=deep to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub. Now I wanted to remove that option but found the file ...
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33 views

GRUB does not show selection of OS

I have installed Arch Linux and GRUB afresh. It seems to have worked alright, but when I now boot from the harddisk, I only get the GRUB prompt, without any operating systems to boot. My guess is that ...
1
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2answers
116 views

update-grub2 creates grub.cfg.new instead of grub.cfg

When I run update-grub2 on my Debian Buster server, instead of creating a grub.cfg it creates a grub.cfg.new, even though grub.cfg does not exist. And because of this my machine boots into a broken ...
0
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1answer
43 views

How to headless dual-boot Linuxes?

I'm home user of Centos 7. I've install Centos 8 additionaly. I will install Centos 9 over Centos 7 in the future. So I have and will have old copy and new os on the same hard disk. [root@Prestigio ...
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0answers
18 views

SUSE tumbleweed. GRUB does not charge previous OS

I installed OPEN SUSY Tumbleweed, in an independent partition. In other partitions I had MXLinux 18, /home, /boot partitions. After installing Tumbleweed, it only charges OPENSUSE in the grup. I ...
3
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1answer
146 views

Why isn't my compiled kernel showing up in the GRUB boot menu?

I am trying to compile and install my own kernel (5.2.0-rc7) and everything seems to be working fine until I reboot to actually boot into it and am unable to select it from my GRUB boot menu. I have ...
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0answers
61 views

Can I interpret Grub2's post-MBR gap?

While setting up a RAW disk image for use in a QEMU-based virtual machine, I became frustrated because QEMU would load GRUB but then GRUB would not load a menu of OSes to boot into. I've come to the ...
2
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1answer
984 views

CentOS 7 stuck at grub prompt after upgrading Kernel

I tried to upgrade the Kernel using YUM and when I ran [root@AFIBAMBOO bin]# grub2-mkconfig -o /boot/grub2/grub.cfg No path or device is specified. Usage: grub2-probe [OPTION...] [OPTION]... [PATH|...
0
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1answer
1k views

Failed finding GRUB drives of recently installed distros on another drive, edit device.map?

I am running Linux Mint 19.1 on a Samsung 860 EVO 500 GB (dev/sdb) along with Windows 10 on it and recently added a Crucial MX500 1TB (dev/sda) to try out and use more distros, both of them are ...
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2answers
365 views

Setting Kernel parameters when grub.cfg is on another distro

My setup is: -Windows 10 on a M.2 SSD -Ubuntu 18.04 on a normal ssd (sdb) -Arch Linux on sdb as well but on different partitions I first installed ubuntu with grub and later added arch linux ...
2
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1answer
474 views

Using Label in grub on Debian 9

I installed my server with Debian 9 and Grub with a LABEL. In my /etc/fstab I see My label as followed: LABEL=root / ext4 errors=remount-ro 0 1 /dev/sr0 /media/cdrom0 udf,...
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0answers
605 views

ARCH grub-mkconfig doesn't do anything

i tried installing ARCH and everything seems to work pretty fine. I followed this installation for the most part (https://gitlab.com/jsherman82/notes/blob/master/arch.md) But i seem to have a problem ...
1
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2answers
514 views

I can't make a GRUB config

A few weeks ago, I accidentally updated my kernel, and out of nowhere I got these strange pixelated lines all over my screen. So, I decided to try and use the linux-lts kernel. But, when I tried to ...
1
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0answers
439 views

grub2-mkconfig creates grub2-efi.cfg different from the existing one, but why?

On Fedora 29 on a machine with UEFI hardware. Trying to generate a new /etc/grub2-efi.cfg. Dry run first! Change nothing in /etc/default/grub. (Actually wanted to remove rhgb quiet from the ...
0
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1answer
1k views

/etc/default/grub: line 60: terminal_output: command not found [closed]

I am using centos7 when I run command sudo grub2-mkconfig -o /boot/grub2/grub.cfg I get error /etc/default/grub: line 60: terminal_output: command not found The lines after 60 of /etc/default/grub ...
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2answers
4k views

Configure separated GRUB to run Linux from LVM ddrescued device

I got new 120GB SSD and I want to restore my Linux Mint from my ddrescued /dev/mapper/mint--vg-root I splited SSD to 500MB sdb1 Ext4 and 119GB sdb2 LVM as it was before crash. Then I created mint-vg ...
3
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1answer
2k views

Grub2 not finding windows partition

I have brand new laptop with windows 10. Using NVME ssd drive. I am trying to do multiboot using UEFI. For some reason, grub-mkconfig -o /boot/grub/grub.cfg is not finding my windows partition. I ...