GRUB2 is the next generation of the GRand Unified Bootloader (GRUB). Ubuntu has used GRUB2 as the boot loader since 9.10 (Karmic Koala). Commonly referred to as simply "GRUB".

learn more… | top users | synonyms (2)

0
votes
1answer
20 views

Remove Grub from its own partition

Some time ago I installed Ubuntu alongside Win8 and didn't like it quite much but decided to leave it installed. Now I wanted to delete it and as I've already had problems before uninstalling ubuntu ...
0
votes
0answers
8 views

white screen on new install 14.04 reboot

I have a problem with Ubuntu 14.04 on a Toshiba Satellite laptop C55-B5201 I had 1st installed Ubuntu 14.04 and it ran OK but after an upgrade in early February, it began to have a white screen with ...
0
votes
1answer
3k views

Kubuntu UEFI Dual Boot with Windows 7 failed at installing Grub-efi

I want to install Kubuntu 13.04 together with Windows 7 in UEFI Mode. I installed Windows 7 first, which created the EFI boot partition. When it come to installing Kubuntu, the installation failed ...
0
votes
0answers
5 views

Docker warning on cgroup swap limit, memory.use_hierarchy

I am getting this warning from 'sudo docker -d': WARNING: Your kernel does not support cgroup swap limit. even after following the steps (as in this link): modify below lines in ...
0
votes
0answers
72 views

Why do I get a rainbow screen after booting?

I'm trying to expand the partition of /dev/sda1 on my Ubuntu VM but after I put the Ubuntu.iso onto a USB stick(I didn't put it in the laptop at the time), I got the boot menu. I clicked Ubuntu, then ...
1
vote
1answer
51 views

How to blacklist zfs kernel module during boot?

How to disable ZFS kernel-module before boot in grub? It is mentioned that some modules can be disabled through grub command line in similar question. Unfortunately this method is not working with ...
3
votes
3answers
3k views

Grub won't boot windows after update from 11.10 to 12.04

thanks for your time and reading this, here's the deal: i upgraded from 11.10 to 12.04 and everything worked out until i rebooted, i had 11.10 sucessfully running as a dual boot with windows vista. ...
0
votes
0answers
10 views

my live usb has error Grub Rescue

my issue is NOT ubuntu 14.04 LTS installed on HDD. my issue is live usb getting error on boot "no such device: ..... grub Rescue > " i know people say just format and remake whole live usb again. i ...
0
votes
0answers
8 views

GNU Grub Ubuntu

I am totally new to Ubuntu .I have few problems. First one is,when I start my PC there shows up a purple screen with "GNU GRUB" and there are some options to choose "Ubuntu RAM,Ubuntu,Advanced ...
8
votes
1answer
196 views

Backup LVM snapshots and Grub2 problem

Long story short, I'm using obnam to take backups of my system. This is what I do: take LVM snapshot of /, /usr, /boot, /var, /home mount the snapshots on /bck-snapshots, /bck-snapshots/usr, ...
2
votes
3answers
5k views

/dev/mapper/ubuntu--vg-swap_1 is not ready or not present

This is frustrating as heck, I moved away from Windows 7 OS because of issues, errors, and such and was sold to Ubuntu because it was supposed to be reliable, and now errors and issues right after ...
0
votes
0answers
48 views

A very unique problem

I tried starting up my personal computer today, only to find that it had serious difficulties. I found out that a younger brother had started it up once, and at some point during the boot up had typed ...
1
vote
1answer
22 views

GRUB Won't load after instaling Ubuntu 14.04 on Windows 7 Dell Inspiron 3537

I bought this laptop from Amazon, which is a Dell Inspiron 3537 with a Windows 7 OS. It DID have Windows 8 before it, the company which was the supplier obviously changed the operating system. I ...
0
votes
0answers
9 views

Since last update: Splash broken

fellow Ubuntu Community! I am facing an issue with the splash-bootup screen on my notebook. Since one of the last updates, the splash screen is no longer showing the Ubuntu-logo and the glowing dots, ...
0
votes
0answers
10 views

Grub halts on menu until enter is pressed

I have installed an Ubuntu server and it stops on the Grub Menu until ENTER is pressed without timing out and using the default entry. At first I thought that the problem was due to a reboot after a ...
0
votes
0answers
6 views

creating a bootable partition that's recognized as a flash drive

currently I am running windows 7 but I have run different versions of Ubuntu in the past. I am looking to get back into running this fantastic OS with macbuntu, it looks nice and runs well in virtual ...
241
votes
33answers
265k views
+100

How do I remove or hide old kernel versions to clean up the boot menu?

Every time I install a new Linux kernel, it gets left in the grub_config, making the boot menu longer each time. I know I can manually search through the installed packages and remove them. Does ...
0
votes
1answer
4k views

Grub resue error insmod normal File not Found

I have a Dual Boot with Windows 7 and Ubuntu. Using Disk Management in Windows, I deleted the Ubuntu partition, but when i restart my computer, I'm getting Grub Rescue Command. I Tried ls ...
9
votes
1answer
419 views

Why is there an “update-grub” and a “update-grub2” command?

I updated my linux machine (dist-upgrade) and the linux-headers were updated. Suddenly the Windows option in GRUB was gone (booting parallel). This was solved by issuing "update-grub" everything works ...
5
votes
1answer
14k views

GRUB does not detect Windows

I have finally installed Ubuntu on my second drive. When I start my computer GRUB only offers me to boot Ubuntu, not Windows 7. What needs to be done so that I can choose between Ubuntu and Windows in ...
-1
votes
1answer
18 views

How to make changes in bootloader?

Hi I have an assignment to complete and my teacher has asked me to make changes in my boot-loader so that when my system boots there is an option of "Welcome Sarah". I have dual boot set up in my ...
2
votes
1answer
134 views

Install Ubuntu 14.04.2 LTS alongside Windows 8.1 Dual-Boot on RAID Acer S7 question marks installation popup error “???”

I bought a new laptop and wanted to install Ubuntu alongside Windows 8.1 on it. After many an attempt and weeks of troubleshooting installation and booting problems, I finally found a solution for my ...
0
votes
0answers
5 views

wn-block (0 , 0) call trace install

I have big trouble with my PC. i have dual booth ubuntu and windows 7. When i'm recovery my windows 7, i got grub rescue boot. When i boot from USB which contains Ubuntu operating system, i am seeing ...
-1
votes
0answers
13 views

I have Ubuntu installed, but im stuck at the GNU GRUB menu.

When installing Ubuntu onto my Toshiba Satellite C55D-B5319, it told me to eject the boot cd then restart, but i didnt remove the cd, and restarted anyways. Now it brings me back to the GNU grub ...
2
votes
1answer
4k views

Insmod error in grub: symbol not found:grub_realidt

I have a dual boot PC with Windows 7 and Ubuntu. I upgraded from 12.04 to 12.10 and then to 13.04 and since then I have not been able to boot because the PC goes into grub rescue with the error "File ...
-1
votes
1answer
25 views

I accidentally didn't remove the installation disk while installing ubuntu, and now it won't install. How can i fix it?

After installation, it said to remove the installation disk and restart, but the disk tray wouldn't open. So i restarted anyway, and now it brings me back to the install screen everytime i try to ...
0
votes
0answers
21 views

Ubuntu installs on my laptop, reboots, and brings up the install screen again. How do I fix this?

It brings up the "GNU GRUB version 2.02~beta2-9ubuntu1" screen that gives the options to Try ubuntu without installing, Install Ubuntu, OEM Install (for manufacturers), Check disc for defects. ...
0
votes
0answers
20 views

Dual Boot Ubuntu without touching windows installed on another drive?

I recently installed Windows 8.1 on my 250GB SDD. I still have my 1TB HDD with an older version of Windows 8.1 and files that I use (like Documents and Games), the 1TB HDD is basically just a files ...
-1
votes
0answers
19 views

Cant boot to Kali linux [on hold]

I have installed the operating system successfully on my laptop that has Win 8.1 pre-installed. (With this guide) After restarting the computer, windows 8.1 loaded instead of grub bootloader, so I ...
2
votes
1answer
30 views

Installing Ubuntu 1st Time, Fatal Error with Grub

I am new to Linux and this is my first time trying to install Ubuntu. Six hours in, and I have not yet succeeded. Any assistance would be greatly appreciated. I am trying to install Ubuntu on a ...
33
votes
1answer
42k views

How do I boot into a root shell?

When booting to the graphical desktop fails we sometimes are recommended to boot into a "root shell" or to boot in "recovery mode". How do I do that?
0
votes
0answers
6 views

Two different boot screens (GRUB) for Ubuntu live?

This is the usual Xubuntu 12.04 Live USB pendrive boot screen (GRUB, I presume): But sometimes, even when booting from the same pendrive, I get this other: This strange behavior only happens for ...
2
votes
3answers
538 views

Arrow Keys not working in GRUB

I have Ubuntu 14.04 and Windows 7 installed in my computer, but since I update to Ubuntu 14.04 the arrow keys does not work in GRUB, so I can not boot Windows 7. However it is very weird that after it ...
3
votes
1answer
3k views

Memtest86+ options are missing in Grub menu

I had the same problem as @coversnail here: How can I add the Memtest86+ options back to the Grub menu? The problem is: I just can choose between older kernel versions and the actual Ubuntu version ...
0
votes
2answers
155 views

Ubuntu 14.04 booting, behaves like a spoiled child

I've unsuccessfully tried to boot again in Ubuntu after 1 week of not using it. It clearly punishes me for that. Joke aside, please know that i'm using "vanilla" Ubuntu. I didn't tinker with it. All ...
0
votes
0answers
12 views

How do I debug GRUB_TIMEOUT?

As described here: Grub menu not waiting despite of GRUB_TIMEOUT=10 Adding this line to /etc/default/grub fixes the problem: GRUB_RECORDFAIL_TIMEOUT=10 But why does grub fail in the first place? ...
2
votes
5answers
4k views

Grub menu not waiting despite of GRUB_TIMEOUT=10

I have Ubuntu 12.04 installed along side of windows 7. The grub menu doesn't seem obey GRUB_TIMEOUT=10, I see the grub menu there for a split second and it immediately defaults to the first option. ...
0
votes
1answer
42 views

Unable to boot Ubuntu 14.04 on Acer E3-112 laptop

I recently installed Ubuntu 14.04 64bit on an Acer E11 laptop (model E3-112). The installation was successful. However I cannot boot Ubuntu. It directly boots to windows and does not even shows Grub. ...
2
votes
2answers
6k views

No boot option after installing Ubuntu 12.04 LTS on Acer Aspire 4736z with Live CD

I am facing a problem. After installing Ubuntu 12.04 LTS using Live CD, at the reboot there is no boot option to choose the OS. I directly get logged into my Windows 7. Before that i was having an ...
1
vote
1answer
3k views

Got error 'GRUB installation failed' while installing ubuntu 12.04 lts on windows 8

I have Sony vaio with Windows-8. I also want Ubuntu 12.04 as my second OS. I created 50GB root partition and 4GB swap-area partition. But after some time(about 2 minute) while installation I got ...
0
votes
0answers
15 views

Debian Wheezy ISO install breaks boot for Ubuntu distros

I installed a new Wheezy from an ISO flash drive. All seemed to go well, until I tried to reboot. Wheezy had dropped my password, so I couldn't open it up, and my two Ubuntu installations (I believe ...
0
votes
0answers
10 views

grub cursor position

after an incident that happened years ago caused by tee, my "down" button didn't work anymore. Now I want to set my cursor position in to the bottom. My Aim is that I can use the up button to choose ...
0
votes
2answers
66 views

grub can't find grub.cfg when booting from zfs root

I installed Xubuntu 14.04 on a ZFS-root following these instructions using ZoL's Debian repo: https://github.com/fajarnugraha/pkg-zfs/wiki/HOWTO-install-Ubuntu-to-a-Native-ZFS-Root-Filesystem The ...
1
vote
2answers
3k views

Boot loading problem after Wubi installation of Ubuntu 12.04 on Windows 7

I was new in Ubuntu OS and I was just trying to use wubi windows installer to get a Ubuntu first for hands-on. I followed exactly the same as the instructions and after reboot win7, there is no ...
1
vote
1answer
42 views

windows 7 booting in background but shows the grub screen of UBUNTU 14.04 wallpaper in distorted way

I dual booted my HP Pavilion 15-n012tx (which was pre-installed with Windows 8 pro) to Windows 7 and Ubuntu 14.04 Trusty Tahr. Booting them was fine with no errors. Installed Windows and Ubuntu in ...
0
votes
0answers
21 views

Windows 7 does not boot after removing Linux [duplicate]

I recently removed ubuntu to install windows 7. However, even if my Windows USB detectes my ssd in order to install my OS in it, it does not boot from this disk after the installation finishes (after ...
0
votes
0answers
7 views

GRUB not showing on cold boot but on warm boot

I have a duel boot Windows 8 + ubuntu 14.04 (EFI), but what is happening now is I am booted directly to windows when I first start my computer or restart from ubuntu. I can see my grub only when I ...
0
votes
1answer
34 views

Making ubuntu take over windows space on mac

I have a macbook with triple boot OSX, Windows 7,and Ubuntu, which took me 2 weeks to make it work. I boot with the rEFInd and Grub2 boot menus and have now discovered I don't need Windows anymore. ...
1
vote
1answer
24 views

GRUB cannot find the ISO image on the hard-disk?

I have an old computer with Kubuntu version 10.10. I want to install the latest version and followed the instruction according the post Install Ubuntu from ISO image directly from hard disk of a ...
1
vote
1answer
40 views

Is there a way to boot into grub on a mac rather then OSX?

I have successfully installed Ubuntu 14.04.2 on a Mac Mini(late 2014).Now I can get to the new installation by pressingAlt > EFI BOOT to get to GRUB and selecting Ubuntu to boot the OS. My question ...