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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Error: file ‘/boot/grub/i386-pc/normal.mod’ not found. Entering rescue mode… grub rescue>_

I have a dual boot system of Ubuntu 16.04.5 and windows 10 in my dell vostro 5460. Yes for a purpose I shrink a drive in windows part. Then I shutdown. But while I switched it again it shows this grub ...
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GRUB rescue mode after installing ubuntu ( dual boot )

I have a problem, I installed ubuntu on the same hard disk of Windows 10 and when I restarted my laptop this problem appeared . Please give a clear solution . Laptop : Asus rog g752vs
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Booting OS X after installing ubuntu with keyboard connected to Ubuntu

MacMini late2012 After power on Ubuntu directly loads. Pressing alt doesnt have any impact. Likely due to fact, that keyboard is bluetooth wireless and has been already connected to Ubuntu and sees ...
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Ubuntu 18.04, Unable to change screen resolution with NVIDIA graphic card

This is a bit long but pretty straight forward: I tried to install Ubuntu 18.04 from a USB key but instead of the grub menu I kept getting a burnt-out screen. From this answer I understood that my ...
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Want to set my dual boot because it got desipeared

I tried to know were linux is installed I didn't find the path using sudo fdisk -l to work on grub fix problem so this is what I got after this command : sudo fdisk -l Device Start ...
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Will removing Ubuntu remove grub or not?

I am installing Ubuntu (dual boot with Windows 10) on my laptop and I wanted to know if I format the partition in which Ubuntu is installed, will Grub bootloader be removed too? If not then how can I ...
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How to boot a Windows on another solid state drive alongside Ubuntu on another solid state drive?

I have two SSDs. On one of them, Ubuntu, and on one of them Windows. I installed Windows first and Ubuntu second. Now even if I manually boot into my Windows SSD, I get taken to Ubuntu. What's more ...
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20.04: Why is there a ~10s grub delay, after menu selection, before kernel (no quiet arg) boot messages start?

quiet kernel arg has been removed so after manual or auto grub menu selection, the kernel should start loading and posting messages instead there's a consistent ~10s delay with a blank screen the ...
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Ubuntu 20.04 on ZFS can't update kernel, bpool missing

Symptoms Kernel doesn't update. That is after restart, the system is still on the old kernel. Changes to GRUB config aren't applied. Installing a new kernel isn't applying. bpool is missing due to ...
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Can't repair grub file

I have on old HP PC, Pavilion. Have two drives on it, an older WD 500 MB storage drive, and a brand new WD 3 Terabyte sata drive. Installed Ubuntu 20.04 on the new drive, but I can't get it to boot. ...
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Tried to uninstall dual Linux boot (not Windows), now stuck on GNU GRUB screen

I initially Installed Ubuntu 18.04. I wanted to try Ubuntu Studio to use for audio production. So, I backed up and installed Ubuntu Studio 20.04. Then, I uninstalled Ubuntu Studio 20.04 referring ...
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Login Password, Grub Password or Bios Password

I found that Ubuntu login password can be easily reset as mentioned in this article: Reset Your Forgotten Ubuntu Password in 2 Minutes or Less I was wondering if there are alternatives to this. Is ...
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Problems updating Ubuntu 18.04

Running a partial update I ran into a problem with GRUB boot loader, it looks like I should install GRUB on all the disks, I have only one disk because I am using a dual boot with Windows 7, this is ...
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How can you control the number of kernel entries in GRUB Advanced Options?

I'm having an issue with the current kernel version, so I am booting with the previous one until the issued is resolved. Only the two most recent releases are listed in Advanced Options, which seems ...
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Getting attempt to read or write outside of disk “hd0” after install

After installing 20.04 I keep getting the error message attempt to read or write outside of disk "hd0" Entering rescue mode... I have done a lot of reading on this and have tried all of the given ...
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Missing modules (cat /proc/modules; ls /dev) and UUID doesn't exist in BusyBox

I'm stuck in the boot and can't open any terminal. When I try to boot my laptop it shows the following error: Gave up waiting for root device. Common problems: -Boot args (cat /proc/cmdline) -Check ...
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Grub is not booting Windows 10 anymore

The problem: Whenever I chose Windows 10 boot mgr on GRUB the laptop restarts and comes back to GRUB screen The root: I was updating my Ubuntu version when I lost my internet connectivity and update ...
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grub command prompt appearing after boot-repair and manually updating grub

I had ubuntu 19.10 on my system with the Legacy boot. I installed Windows 10 in UEFI mode on top of that. Due to this I wasn't able to boot into Ubuntu. I fixed it using the boot-repair utility. But ...
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No GRUB menu during Ubuntu boot with 2 displays

I have installed Ubuntu 20.04, dual booting alongside Windows, but nothing shows up on both monitors on boot up w/ Ubuntu. I know that it is taking place in the background because it automatically ...
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Windows Partition ibb.co/C28VxFW

[ ibb.co/C28VxFW ] link, the last two commands didn't work K7AAY I deleted windows by installing ubuntu last year and since then have had a copy of pop os for a bit and then returning to ubuntu. ...
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Safely deleting EFI system partitions?

How I ended up with three ESP (EFI System Partition)... My computer came with Windows-10 installed, and their correspondent ESP partition. So, I shrinked the windows-10 partition and installed a ...
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34 views

Dual boot installation on hybrid (ssd + hdd) storage

I am planning to install Windows 10 and Ubuntu 20.04 on my laptop. My laptop specifications are: i7-8750H 16GB RAM GTX 1050Ti 4 GB 256 GB SSD + 1 TB HDD Well, I am considering two options-> ...
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(Changes to) grub config being ignored?

I've been trying for years to get my various Ubuntu installations to hibernate, so far to no avail. 12.04, 16.04, 18.04, now 20.04. Never works. This time, I followed this fine guide. I made the ...
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How to fix these two errors that pop up before Ubuntu boots?

Error: can't find command 'hwmatch'. Error: invalid PBKDF2 password. Enter username: Root(E.g) Enter password: Toor Error: access denied Failed to boot both default and fallback entries Press ...
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Install Ubuntu and Windows in different drives of same computer

Some backstory (TLDR: skip to next paragraph). I am a novice linux user, but have been using Ubuntu for quite a while now for my daily tasks. My current laptop of 10 years gave up and now its CPU is ...
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How to manage GRUB Bootmanager issues with Ubuntu on (frequently removed) external SSD

I have a new hp laptop with Windows 10 and UEFI. I installed Ubuntu on an external SSD, and did the partitioning according to this How to use manual partitioning during installation?. Everything ...
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grub-mkconfig stopped working in Ubuntu 20.04 LTS

XUBUNTU AMD64 installation I am re-building a server to mirror my Ubuntu 18.04 server configuration, having given up on attempting the upgrade process. grub-mkconfig previously wrote grub menu ...
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Dual boot GRUB only boots windows into boot options

I've been working on getting a dual boot setup going, and everything appears to be working fine; upon boot, grub shows Ubuntu and Windows Boot Manager to choose from, however upon choosing Windows, I ...
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Alert! /dev/sda5 does not exist. Dropping to a shell

I installed Ubuntu 20.04 on my laptop but when I start it's shown this error ALERT! /dev/sda5 does not exist. Dropping to a shell BusyBox v1.30.1 (Ubuntu v1:1.30.1-4ubuntu6) built-in shell (ash) ...
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178 views

Single Boot Ubunu 20.04 Instalation not working. Why?

Samsung Ativ Book 4 (Broken Dispaly) Processor AMD E2-2000(smth like that) 1.7 Ghz BIOS Secure Boot - disabled CSM and UEFI selected FastBios Mode -disabled Partition setup #1 512mb efi (I use ...
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How to unload kernel module permanently Ubuntu Server 20.04? [duplicate]

I have an Atomic PI and Ubuntu Server 20.04 installed on it. During shutdown it hangs with an error of "watchdog soft lockup" caused by DMA controller drivers called dw_dmac and dw_dmac_core Reason ...
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Stuck on GNU GRUB screen: Dual Booted HP Spectre x360 13t

I recently installed Ubuntu 18.04 alongside Windows 10 on my HP Spectre x360 13t. After installation, when I turn on the laptop, its always stuck on the purple GNU Grub 2.02 screen with a frozen ...
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Cant update Grub , /usr/sbin/grub-mkconfig: 1: /etc/default/grub: r#: not found

on using sudo update-grub i get an error so the error is /usr/sbin/grub-mkconfig: 1: /etc/default/grub: r#: not found and due to this i have to edit grub temporarily every time i boot up just to ...
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Can't install Ubuntu 20.04 with SSD caching

I've been trying to install Ubuntu with LVM and SDD caching (I've tried both lvmcache and bcache) and keep encountering grub issues. I have two SSDs and two HDDs and have been trying to use LVM to ...
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grub version 2.04 not supporting USB keyboard

I have got two separate hard drives, one with Ubuntu newest version installed and other installed Windows 10. After changing BIOS prioritizing to Ubuntu drive, I disable grub file grub_timeout_style ...
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grub openup everytime of start of pc,how to stop that?

whenever start computer the grub terminal opens up.But i dont want that to happen every time .how would i stop it from comming everytime.(which option should i change in the grub config file if that ...
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Modify Trusted GRUB 1.1.5 to show Xubuntu 16.04 LTS and Android x86 7.1.2

this is my first post. So recently i installed Android x86 on my MSI U130 Wind, it installed Trusted GRUB 1.1.5 and does not recognize Xubuntu (Does not show it), so im asking a way to include ...
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Lost the ability to boot into Windows after Kubuntu 20.04 install

I've been asked to fix a Windows 10 PC with a weird setup. It could not connect to any network except the one at the school where my friend works, and there it could not connect via WiFi, only through ...
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15 views

How to skip the grub-bootloader

I'm having a problem with my microsoft surface. I wanted to reinstall Arch (because it was very slow) so I removed the grub folder in the boot partition (I don't know the reason anymore why I did that....
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67 views

Laptop won't power-off after shutdown

so I did software updates yesterday (the software updater popped up and I followed to instructions) and went on to watch a movie. Then I used to GUI to press "Power Off", closed it and went to sleep. ...
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Ubuntu eoan failure with grub-probe on ZFS root partition

new user here. I tried to install Ubuntu again after a long time and used ZFS as root partition to try it out. Have encountered some issues which manifest when installing software via apt: user@T440S:...
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24 views

Cannot access grub or boot from USB

I have been plagued by the following for over a month and at a loss for other ways of asking Google how best to troubleshoot. Background: Had been running Ubuntu 18.04 smoothly for many months on a ...
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Cannot boot Ubuntu 20.4 from USB drive on Insignia touchscreen laptop (originally running Windows 10)

I am new to Ubuntu, and am converting some of my devices, I recently inserted a USB drive, onto it formatted (in FAT32) the latest version of Ubuntu, into a relatively new, Insignia touchscreen laptop ...
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18.04 boots but only from grub menu, or after displaying tty

This is a new install on a Sony Vaio E-series VPCEB11FM. After pressing the power button to boot, if I then hit Esc or Shift to open the GRUB menu, and then selected the first (default) menu option ...
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Grub can't find Windows 10 boot entry [closed]

Was dual booting Win10 with Mint Linux, recently installed Ubuntu 18.04 and since than i can't see Win10 boot entry in grub, just the standard "ubuntu", "advanced options" etc. I surely ran "update-...
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I have a sd card with Ubuntu installed on it. Can I run Ubuntu from this SD card on another PC on which grub is not installed?

I have a SD card with Ubuntu 20.04 installed on it. Can I run Ubuntu from this Sd card on another PC on which grub is not installed? Can I just plug the SD card into some Windows PC and then just boot ...
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Saved changes to grub doesnt actually work when booting

So I have a problem of PCIe bus error , its due to my hardware . The workaround i found was to put pci=noaer inside grub file beside quiet splash ( in the line that starts with linux) but as of now i ...
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Dual boot Windows 10/Ubuntu Linux 18.04 LTS upgrade to 20.04LTS - Kernel 5.4 is not booting up - freezes after loading ramdisk

I had successfully running Windows 10 and Ubuntu Linux 18.04 LTS system for almost 2.5 years. Then heard about 20.04 LTS - seems to be smooth installed-i wanted to try it. I followed this link Did ...
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Windows 10 dual boots straight to Ubuntu

The only way I can get back into Windows 10 is to go into the boot manager where it shows these items and choosing the second option with the first being the newly-installed Ubuntu installation: ...
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Grub not booting new kernel Ubuntu 16.04

I don't know what you need I just can say that grub is not booting the new kernel I updated grub and everything. My second problem is that I don't know what you need to see to help me so if you could ...

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