Questions tagged [grub2]

GRUB 2 is the next generation of the GRand Unified Bootloader (GRUB). Ubuntu has used GRUB 2 as the boot loader since 9.10 (Karmic Koala). Commonly referred to as simply "GRUB".

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Different linux image on Ubuntu 20.04

I installed ubuntu 20.04 on Asus Tuf A15 (dual boot windows10). It takes too long to boot and I have also a problem in starting the Grub (I have to click on esc otherwise it boots directly on windows) ...
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Ubuntu USB boot not working from Grub 2 screen

Ran into a problem with a windows rollback interfering with an update. Now computer gives me 0xc00000034 error on the BCD file. Trying to access a Toshiba laptop computer using Ubuntu 20.04 boot from ...
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How to change grub timeout in Ubuntu 20.04

Answers to a very old question suggest to edit /etc/default/grub That file has the following contents: GRUB_DEFAULT=0 GRUB_TIMEOUT_STYLE=hidden GRUB_TIMEOUT=0 GRUB_DISTRIBUTOR=`lsb_release -i -s 2>...
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error: file ./boot' not found, after installing Ubuntu 20.04 on an external SSD

I've decided recently to install Ubuntu on an external SSD. I want to use it as a "work OS" that I could plug anywhere. After some research, I found that with usb 3.0 throughput, there are ...
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Many problems in ubuntu, What should I do?

I recently installed Ubuntu and it was working fine. One week ago I needed to use some Kali Linux tools so i installed Katoolin but it didn't work so i installed Kali Linux on a Virtual Machine in ...
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Lenovo ThinkPad X390 won’t boot while plugged in

I’m using Lenovo ThinkPad X390 Yoga (model type: 20NN002NMC). I have been using dual boot of the preinstalled Windows 10 x64 and Linux. About 6 weeks ago, after updating the BIOS N2LET76W 1.75 (https:...
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Grub menu not showing up on boot after firmware update

After a firmware update on my laptop, the Grub menu disappeared and I can only boot on Windows 10. Machine configuration: Lenovo X1 Carbon Gen 7th shipped with Windows 10. I installed Ubuntu 18.04 ...
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Ubuntu fails to boot with kernel 5.4, ic2 timeout error

I have a laptop running ubuntu 18.04 that suddenly refused to boot, showing these errors, white on a black screen: nvidia-gpu ic2 timeout error e0000000 i2c_transfer failed -110 ucsi_ccg_init failed -...
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Complete uninstall of ubuntu 18.04 before reinstalling 20.04

I've run into some issues on Ubuntu 18.04 dual-boot when trying to install some gpu drivers and I wanted to get a clean reinstall of Ubuntu 20.04. I formated the partitions on which Ubuntu was ...
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Ubuntu doesn't boot from usb stick

DISCLAIMER: I DIDN'T WANT TO INSTALL IT IN DUAL BOOT ON THE MAIN DISK I wanted to install Ubuntu on a USB stick, so I took two of them, let's call them sdc and sdb, formatted them, mounted the Ubuntu ...
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need advice on fixing grub boot error : "symbol 'grub_calloc' not found [duplicate]

i've seen all the posts about using a USB bootable and the boot repair disk utility. my twist is that my pc i'm using for a server is too old to support booting from USB. And when i try 'try ubuntu ...
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How to Re-boot to USB stick using bash script

While running a bash script, I would like to programmatically re-boot from a USB stick. The bios is set up to boot from the HD. Is this possible? Any hints? Why do I want to do this??? I'm updating ...
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How to fix starting bpfilter error and root account locked in recovery mode [closed]

I am running Ubuntu 19.10, i3, integrated graphics, and all things were well up until a few weeks ago where Ubuntu started to show a red circle up in the top corner which I attempted to deal with by ...
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Grub menu not showing after recent Upgrade

I'm running Ubuntu 18.04 alongside Windows 10 in a dual-boot. I was used to selecting what OS I can boot in the GRUB menu at startup. Yesterday GRUB was upgraded to patch the Boot Hole security. Now ...
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After installing Ubuntu 20.04 and accessing it, I cannot switch back to Windows 10 (Dual Boot)

I am a complete noob when it comes to this so please hear me out. I installed Ubuntu on my Desktop and Laptop. My laptop works great: the Grub GNU works and no problem with booting to Windows or ...
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1answer
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Impossible to install kubuntu

I have a success first time to install kubuntu 20.04 but after reboot I have some problem KUBUNTU INSTALLED but not start 1- After American megatrend logo : Xsession:warning:unable to write to /tmp, ...
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How to install burg bootloader in ubuntu 20.04?

Tried many ways, but it seems a dead end. Tried the installation method for Ubuntu 16.04 but it keeps giving errors.
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Some errors while booting

I cant boot into ubuntu or windows in my system after installing a os named prime os. The URL of Boot-Repair-Info is http://paste.ubuntu.com/p/Z3qt43CB7v/ can anyone identify the issue.
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Unable to install any packages now due to errors in GRUB file

$ cat /etc/default/grub # If you change this file, run 'update-grub' afterwards to update # /boot/grub/grub.cfg. # For full documentation of the options in this file, see: # info -f grub -n 'Simple ...
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updated both OS's and now i cannot boot to windows from grub becuase of out of order partition. I used AOMEI backup

ubuntu@ubuntu:~$ sudo fdisk -1 fdisk: invalid option -- '1' Try 'fdisk --help' for more information. ubuntu@ubuntu:~$ fdisk --help Usage: fdisk [options] <disk> change partition table ...
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Dual boot issue Windows 10 and Ubuntu

I have installed Windows 10 in SSD and it was working fine. Then I installed Ubuntu 20.04 in HDD. Now my system is directly login to Ubuntu only. I am not getting any grub. If I choose SSD as the boot ...
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How to fix a grub boot error : "symbol 'grub_calloc' not found

Just ran the latest batch of updates on 20.04 (Xubuntu), and now I'm getting a GRUB error: symbol 'grub_calloc' not found I'm dropped into the 'grub rescue' shell, but have no idea what to do there ...
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after reinstalling ubuntu on dual boot i was not able to access windows 10 via grub

What makes it even worse is that I'm kind of terrible at Linux in general, I mean I know basic stuff but nothing too advanced. It happened after I reinstalled Ubuntu 20.04 because of some issues i had ...
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Can not access Windows 10 after installing Ubuntu on another drive

I recently installed Ubuntu alongside Windows 10 but am no longer able to access Windows when rebooting. On start up my computer, which is booting through UEFI, goes straight to GRUB but there is no ...
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''grub-install failed, this is a fatal error' during the installation of second Ubuntu

I am working with a computer that has Windows and Xubuntu operational systems. Besides that, I wanted to install Linux Mint 20 (then I tried with Ubuntu 20.04 LTS) alongside these two operating ...
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Ubuntu 20.04 + WIndows 10 Pro + disk encryption

I would like to use dual-boot with Windows 10 + BitLocker next to Ubuntu 20.04 + encryption (what is the full-disk encryption software that comes with Ubuntu 20.04 called?). I don't need (or want) ...
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Startup Problem Ubuntu 18.04

After selecting Ubuntu in GRUB, I am getting the following messages and unable to get the login screen. If I try to boot Ubuntu in recovery mode, everything gets normal except the screen brightness ...
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GNU grub instead of grub 2

I recently uninstalled kali Linux from a triple boot laptop (othres being windows 10 and ubuntu 20.04) now instead of grub 2 which shows windows and ubuntu during booting all I can see is a GNU grub ...
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GRUB Customizer: EFI/ubuntu/fonts/unicode.pf2 not found

I am using Ubuntu 20.04 and I dual-boot Pop!_OS with it. And I used grub2 for GRUB Customizer. Now I am not able boot into Ubuntu, but I am able to boot into Pop!_OS. Whenever I am trying to boot into ...
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grub-mkpasswd-pbkdf generates different hashes for the same password

I have password 12345 When I generate two grub-mkpasswd-pbkdf2 I get two different hashes. I expected that using the same password would generate the same hash everytime I execute the command Below I ...
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I installed Ubuntu 20.04 alongside Windows 10 but now Windows in not shown in boot options

How can I add Windows 10 to boot options? $ sudo parted -ls Model: ATA ST2000LX001-1RG1 (scsi) Disk /dev/sda: 2000GB Sector size (logical/physical): 512B/4096B Partition Table: msdos Disk Flags: ...
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Loop boot menu booting to Windows 10 GRUB while booting to Ubuntu is fine

I installed Ubuntu along with Win 10. Everything is fine until I installed GRUB Customizer to change the boot order. All I did is change the boot order and nothing else. But I cannot boot to Win 10 ...
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How to make a grub password! [duplicate]

I wish to set a grub password! I dont know how! Please tell me how to make a grub password! Ver: Grub: 2 Ubuntu: 20.04 Desktop: Gnome
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1answer
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install grub on mounted filesystem

I have booted rescue linux (init ram fs), and mounted /dev/sda1 on /mnt/sda1 /dev/sda1 is a linux partition, but /dev/sda has no mbr. How can I install grub on mounted filesystem /mnt/sda1 ? I tried: ...
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Neither Grub menu nor Windows 7 not displaying after dual boot activated with Ubuntu 18.04

I have installed Ubuntu 18.04 on a Windows 7 64 bit OS(dual boot mode). And after installing Ubuntu neither Grub menu to choose OS or Windows is getting booted. I have tried with update-grub and boot-...
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1answer
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Edit grub file from recovery mode

After a successful pass through of my GPU via amd_iommu = on and set to ignore the GPU id in the grub configuration I cant no longer access Ubuntu because it doesn't use my GPU any more. I thought I ...
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1answer
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Grub won't install on usb stick

No matter what i do I can't for the life of me install Grub2 on the USB stick i want to boot from it keeps installing itself to my internal SSD. I've tried manually partitioning according to 3 ...
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No display (only) during GRUB menu

I installed Ubuntu 20.04.1 LTS yesterday on my three year old or so Ryzen powered Lenovo desktop, which has an LG TV connected to it in a dual booting with Windows 10 configuration, but when GRUB ...
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25 views

Grub Theme - how to specificy the font properly

I want to adjust a grub theme to have a truly large font (about double from what is normal). I usually work with the install.sh that comes with it and with grub-customizer. The easy part, consensus ...
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Ubuntu black screen when booting (after an update). Did typical things to no avail [duplicate]

I have a dual-boot system (Windows and Linux). Windows works fine, but I get a black screen when I try to boot into Ubuntu. I did what I found online, like editing GRUB (tried: nomodeset, nouveau....
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37 views

Automatic booting problem in xubuntu 18.04

After doing software update,when i tried to reboot laptop ,I find that it is not self rebooting .So, I turned off laptop and restarted it but it showed me grub(2.02 version) and by default it was ...
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Dual-Boot(on different hard drives) problem after windows update to firmware

I've set up a dual boot with Ubuntu 18.04.03 on SSD and Windows 10 on HDD. Everything was going well, then a few days ago windows updated the firmware of the MSI laptop. Since then, I'm not able to ...
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1answer
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grub 2.04 not reponding to usb keyboard

Since I have installed Ubuntu 20.04 my PC comes up with the grub boot screen where I'm supposed to be able to use the keyboard to either resume with the boot process or carry out some other process, ...
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Accidentally deleted boot options on startup (closed)

Edit: my dad tried to help troubleshoot my computer and now all of the filesystem is gone and the partitions are completely broken. I don't think there's any coming back from this, so I'm just booting ...
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Renaming boot devices

I just installed Ubuntu Budgie 20.04 on my main desktop (Acer). I was happily surprised that it can install onto the SSD which was not an option with Ubuntu 18.04. This gave me the added benefit that ...
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Kubuntu 20.04 sleep/suspend issues

I have a Dell Latitude E6500 (Bios A29) with Windows Vista as the original OS on it. I installed Kubuntu 20.04 as per attached. I did not have problems with Kubuntu or Ubuntu or Mint running from USB ...
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After I turned off my Laptop and then tried to turn it on the next day, Ubuntu doesn't boot correctly

Everything worked just fine but after I wanted to turn on my Laptop (Dual-Boot) again Ubuntu is just showing me this: What can I do to fix it? Btw, I'm new to Ubuntu, that's my first problem. Edit: ...
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Just Trying to Reinstall Grub2.04 on NVME

A relative newbie to this, but have used Ubuntu forever and want to start using it again. I built a new computer recently, but made the partition for Ubuntu too small (15GB), so I created a new 100GB ...
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How to add modprobe command to GRUB_CMDLINE_LINUX_DEFAULT

Ubuntu 20.04 To make my WiFi happy I enter the following modprobe via the terminal; modprobe -r brcmfmac Then wait 5 seconds and modprobe brcmfmacCan I add this to a startup process so that I don't ...
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KUbuntu stuck at grub (OS) selection screen

My Latest dualboot Windows 8.1/Kubuntu is stuck indefinitely at the OS selection screen waiting for keystroke, but runs smoothly otherwise after the selection. Kindly guide me on restoring its timeout ...

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