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".
6,026
questions with no upvoted or accepted answers
3
votes
4
answers
24k
views
Grub not loading
About a month ago I installed ubuntu 14.04 on my computer. I did not replace the Windows 8 that I was previously using. While ubuntu has by and large been working very well, one issue is that grub ...
- 333
3
votes
1
answer
756
views
Dual boot Ubuntu and encrypted Windows 7
I have a work laptop with Windows 7 installed using Check Point Full Disk Encryption. The HDD was dying, so I installed a larger SSD and copied the contents of the old HDD over to it using dd. So far ...
- 131
3
votes
0
answers
1k
views
iMac will not boot OS X after installing Ubuntu
I installed Ubuntu alongside Mac OS X on my iMac, following HowToGeek's tutorial.
Whenever I boot, I get GRUB with the following options:
Ubuntu
Advanced Options for Ubuntu
Mac OS X 32-bit
Mac OS X ...
3
votes
0
answers
669
views
Update GRUB with encrypted LVM on second volume/drive?
On one machine I have an encrypted LUKS container around an LVM on /dev/sda that I can boot into. On the same machine is a second drive with an encrypted LUKS container around an LVM on /dev/sdb (that ...
- 2,375
3
votes
1
answer
949
views
Error occurred while mounting /boot
I wanted to remove Windows 7 and Ubuntu 13.10 from my laptop and just create one partition for Ubuntu 14.04, but this seems to be more difficult then I thought it would be.
Installation seems to go ...
- 181
3
votes
0
answers
3k
views
Reinstalling Grub - shows no volume groups found, how do you fix this?
I have a full backup which I had restored onto a new built system on Ubuntu 12.04
The backup did not include /dev /proc /sys folders.
Upon rebooting, the grub show the following errors
error: no ...
- 31
3
votes
1
answer
171
views
Keyboard not working after installing Windows 8
I had Ubuntu on my Computer. I then installed Windows 8, after which I could not boot from Ubuntu. So I installed GRUB using Boot-repair from a Live USB.
Now, when I boot and see GRUB, I can use my ...
- 61
3
votes
1
answer
255
views
Ubuntu waits for keypress with purple screen
I have a HP ProBook 4515s with 13.10 on it. When I boot it, it always hangs on the purple screen, before The Ubuntu logo appears. It is not stuck, but it waits until I press any key (I do mean any). ...
- 189
3
votes
0
answers
433
views
GRUB USB not working in windows 7
I have just re-installed Windows 7 in EFI mode (getting everything working in a new EFI enabled mode) and used boot-repair to get GRUB working again.
However when booting into Windows, there is a ...
- 31
3
votes
1
answer
197
views
Consolidating hard disks into one machine leads to GRUB "A disk read error occurred" with Win7
Situation:
My older Win7 laptop died (power issues). My new Kubuntu computer has an extra drive bay, so I'm trying to get dual boot to make them play nice together in the same machine. Both drives ...
- 63
3
votes
0
answers
1k
views
Attempt to read or write outside of disk hd0 problem
I installed ubuntu 13.04 on a 16GB usb memory (full installation, not live usb) and boot it with vmware player 6 + plop under windows 7 64-bit host.
To avoid windows format complain, I created a ...
- 31
3
votes
1
answer
563
views
How to partition and install Ubuntu?
I'm using my Ubuntu LIVE 12.04 LTS CD because I have no other OS that is functional.
My Vista Home Premium 64-bit crashed repeatedly, and I have no intention of paying for anymore Windows OS.
Here's ...
- 31
3
votes
2
answers
914
views
Can't load Windows 8 from Grub 2.0 (Ubuntu 13.04)
Just installed dual-boot Ubuntu 13.04 on my self-built Windows 8 Pro PC, and after the installation I restarted, and once I was prompted with GRUB 2.0 I tried to boot Windows 8, and a few seconds ...
- 31
3
votes
1
answer
580
views
Have to CTRL+ALT+DEL to get GRUB menu HP Pavilion ze2000 Ubuntu 12.10
I've got a HP Pavilion ze2000 with a fresh install of Ubuntu 12.10 and after I got my wireless working, (https://askubuntu.com/questions/266408/12-10-hp-pavilion-ze2000-wireless-doesnt-work) I'm ready ...
- 31
3
votes
1
answer
641
views
Cannot get windows 8 to boot after ubuntu 12.10 install (different hdds)
I just took the plunge into Linux, with Ubuntu 12.10. Not knowing if I would like Ubuntu enough for it to become my main OS, I installed it alongside of my existing OS, windows 8. When installing ...
- 31
3
votes
0
answers
451
views
How to modify which keys make the grub menu appear
Sometime I need to access grub. I have the timeout to 0 but I can still call the grub menu by pressing ESC or leaving SHIFT pressed. What I want is to change that so for example, to get the grub menu ...
- 212k
3
votes
2
answers
3k
views
How to remove grub2 in favor of another linux installation grub
I'm using Arch Linux Windows 7 And Ubuntu on the same machine, I installed first Windows 7 Then Arch Linux and Then Ubuntu.
The problem is that the grub 2 on Ubuntu is not recognizing my arch Linux ...
- 131
3
votes
2
answers
207
views
Can I edit login script
Can I edit login script? For I want to restrict the user to only have 3 login attempts. If the user fails to login in after 3 attempts, the system must shutdown.
Is this possible?
- 71
3
votes
0
answers
96
views
Three file not found errors before Grub menu appears - caused by 12.10 upgrade
After just upgrading to 12.10, I see three Error: File Not Found lines flash up on the screen at the very start of bootup, just before the grub menu appears. The system still works properly after that....
- 2,737
3
votes
2
answers
2k
views
Dual booting Windows 7 and Ubuntu 12.10 on UEFI laptop
I have a notebook pre-installed with Windows7 and I installed Ubuntu 12.10 on it following the standard installation steps in the installation image.
The only problem is that on reboot the machine ...
- 141
3
votes
1
answer
350
views
Windows Repairs Itself After Ubuntu Boot
I have a custom built computer in my home which was running Windows 7 primarily. After I installed Ubuntu 12.04 and upgraded to 12.10, Windows 7 has to perform startup repair after every Ubuntu boot ...
- 593
3
votes
1
answer
404
views
How Grub top title can be changed
I am just wondering that 'How I can change the title on very top for Grub' - where it's written like 'GNU Grub version 1.99-21ubuntu3.4'? I am not asking for the menu entry, or to change labels of ...
- 39
3
votes
1
answer
2k
views
Grub menu screen flicker
I am having a strange problem on my Dell Inspiron 1505 laptop. When starting the computer the grub screen flickers or every few seconds. I don't know if it would be called a flicker. The screen ...
- 31
3
votes
1
answer
1k
views
How to make Grub display after installing Ubuntu on a laptop with Windows OS?
I just installed Ubuntu 12.04.1 on a laptop, but whenever I turn on my computer, it still boots to Windows and GRUB doesn't seem to be working at all.
My partition scheme is as follows:
/dev/sda1 - ...
- 31
3
votes
1
answer
453
views
Dual boot with encrypted Windows partition
I tried to make the Windows option on GRUB boot menu the default by following the instructions I found on the internet. The instructions were good, graceful but since I encrypted the Windows partition ...
- 33
3
votes
2
answers
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 ...
- 31
3
votes
1
answer
1k
views
Set boot option to hotkey in GRUB?
I want to set GRUB to boot up a particular option (eg, A different kernel version, different OS) when a certain key is pressed (eg, W to boot up windows with Ubuntu as default and L for Lubuntu). Is ...
- 171
3
votes
3
answers
7k
views
grub2, using variables to pass to linux entry
I have the following variable in a grub.cfg file.
BOOT_PARAMETERS="rootwait rootfstype=ext4 rootimage=$BOOT_ROOT_IMAGE_NAME root=$ROOT_DEVICE console=none intel_idle.max_cstate=1 quiet"
...
- 131
2
votes
0
answers
47
views
Moving an ubuntu installation to another partition
Mostly out of curiosity:
Say that I have a secondary partition, and I copy the current instalation to it with
rsync -av --exclude={/media,/home,/proc,/dev,/sys,/tmp,/run,/mnt} / /media/new
and add it ...
- 6,947
2
votes
0
answers
262
views
how does grubx64.efi locate its grub.cfg file?
I try to understand how Ubuntu's grubx64.efi find the three-command (search, set, configfile) grub.cfg which points to the menu-creating grub.cfg.
I have grubx64.efi both on my internal and an ...
- 33
2
votes
0
answers
137
views
grub error on installing ubuntu on dual boot with windows
I have tried to install Ubuntu latest version on my computer hp pavilion dv6 using rufus i have copied Ubuntu iso image on my flash drive and restart my pc , on bootloader option i chose my flash to ...
2
votes
0
answers
106
views
Prevent Grub resolution reset during startup
I have set a custom Grub resolution, but around 3 seconds into the boot sequence the display reverts to the native screen resolution.
The screen is a small but high-resolution touchscreen (13", ...
- 1,272
2
votes
3
answers
710
views
Someone else experienced boot failures with the 5.19.0-45-generic kernel version?
I don't know when this version was installed. But yesterday the system send me a notice that thought to apply the update requires a system reboot.
I did this and after that, the system boot failed.
...
- 141
2
votes
0
answers
259
views
dual boot Ubuntu and windows 10 black screen
this is an image from the additional drivers i originally had windows 10 installed on my Lenovo IdeaPad Gaming 3 15IMH05 laptop which has the following specs 16.0 GiB Ram Intel® Core™ i7-10750H CPU @ ...
2
votes
0
answers
871
views
Ubuntu 23.04 get's stuck in a grey screen with mouse curser after login
My Ubuntu 23.04 install boots normal, but after I log into my user account it gets stuck at an grey screen and does not react to any input anymore. If I boot into recovery mode and select fsck and ...
user1693125
2
votes
0
answers
157
views
Why does my Ubuntu laptop sometimes fail to wake up from sleep mode? (logs included)
I have an Origin laptop with Ubuntu 22.04.2 LTS. I can usually put the laptop in sleep mode and wake it back up. But about one in every 4 times, I wake the laptop up, I can use it for about 15 seconds ...
- 121
2
votes
0
answers
122
views
Custom kernel giving an error ALERT! UUID=<my-/dev/sda5-uuid> does not exist. Dropping to shell
I have compiled and installed a custom kernel version in Ubuntu 22.04 by following the instructions in https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel
Now when I select my new customized kernel (5....
- 29
2
votes
0
answers
548
views
BLACKLOTUS UEFI virus: windows cannot avoid but how about Ubuntu?
Windows is facing a serious threat but what about Ubuntu? Is there any way to avoid UEFI in the boot process or not be affected by BLACKLOTUS?
https://www.schneier.com/blog/archives/2023/03/blacklotus-...
- 37
2
votes
0
answers
367
views
How relevant is Grub password protection in the cloud?
I see a recommendation from a vulnerability scanning tool running in AWS EC2, targeting an instance running Ubuntu 20.04:
GRUB bootloader is not password protected. An attacker can use the GRUB ...
- 131
2
votes
1
answer
2k
views
Ubuntu 22.04 stuck at boot screen
My computer won't boot.
I've tried:
Purge Nvidia drivers
Start with nomodeset
fsck (It didn't run because /dev/sda3 was always mounted.)
apt update
Removing quiet splash *
Results of journalctl :
...
- 21
2
votes
0
answers
854
views
Fix Grub2 boot with encrypted root LUKS partition
I currently have 3 different boot partitions:
Windows 11 on nvme0n1
Fedora 35 on nvme1n1
Ubuntu 22.04 on sdc with an encrypted root partition on sdc4
When I initially configure the system the ...
- 121
2
votes
0
answers
652
views
Cannot update the grub with correct command, how to do it
$ grub-mkconfig -o /boot/grub/grub.cfg
is the command I run and I get below
/usr/sbin/grub-mkconfig: 12: /etc/default/grub: quiet: not found
my problem is in this link
https://paste.ubuntu.com/p/...
- 21
2
votes
0
answers
193
views
Unable to use Windows 10 from GRUB menu and other problems in Windows 10 after installing Ubuntu
I have a Windows booting issue while using Ubuntu along with Windows 10.
Ubuntu works normally. Windows seems to be booting with a partition error.
Windows 10 only works after going to boot menu (F12),...
- 21
2
votes
0
answers
200
views
I can't install/uninstall .deb packages because dpkg is being interrupted
Whenever I try to install/uninstall any .deb packages I got this error:
dpkg was interrupted, you must manually run 'sudo dpkg --configure -a'
When I run sudo dpkg --configure -a, then the /etc/...
- 21
2
votes
0
answers
1k
views
Why does Ubuntu 22.04 LTS install continue to fail with 'grub-install /dev/sda failed' error message?
Goal: I am trying to install Ubuntu onto a Dell XPS 8900.
Problem: I can't get through an Ubuntu install without the install interrupting with Unable to install Grub in /dev/sda, Executing 'grub-...
- 51
2
votes
1
answer
126
views
No signal after `sudo update-grub`
Had issue of booting to grub command line Stuck at GRUB command line so ran suggestion of sudo update-grub and then did a reboot.
Now computer fan come on but absolute no signal. No bios, grub or ...
- 129
2
votes
0
answers
2k
views
How can I properly debug a faulty 22.04 LTS Server autoinstall done with the new subiquity frame?
edit2: Over the 2 weeks with subiquity and cloud-init, I pieced together a new shell script with example user-data file and an altered grub.cfg as the one by covertsh did not work for me any longer ...
- 83
2
votes
1
answer
900
views
Load grub menu when running ubuntu 22.04 LTS on VMware workstation 16 player
How to load grub menu while booting ubuntu 22.04 LTS on VMware workstation 16 player to get back sudo access to the user Also how to boot ubuntu on VMware ?
- 21
2
votes
1
answer
179
views
Ubuntu 18.04 not detected upon cloning to 8 TB SSD
Hello everybody out there using Ubuntu,
Since I was running out of disk space, I cloned my Ubuntu 18.04 installation from a 4TB SSD (Samsung) to a 8TB SSD (also Samsung) using dd.
Afterwards, I ...
- 164
2
votes
1
answer
491
views
I can't use apt install anymore after upgrade
I've seen a few issues on the same problem but I can't seem to find a fix for my particular case. So here I go.
I have an issue with my apt and dpkg installations. While trying to download a package (...
- 31