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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Grub not showing after windows 10 installation

I know this question has been asked on the group numerous times but other answers don't seem to help me. I have a Dell Inspiron 32 bit laptop which had ubuntu 14.04 dual booted alongside with windows ...
Grayrigel's user avatar
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Can grub move boot folders back to root? [closed]

Accidentally copied everything and moved it to another folder. Can you move it back? What are some ways to fix this? higher resolution image here
Brian Lau's user avatar
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Slow boot but no hints in dmesg

I have had problems with really slow boots on my Ubuntu 16.04. I dual boot with windows and at the grub loader i choose Ubuntu and the screen turns purple. Then it stays purple for up to 5 minutes ...
JonasJR's user avatar
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How to dual boot Ubuntu and Mint

I have Ubuntu 16.10 installed and bootable on one hard drive, and Mint installed on another drive. Grub sees both OSes but when I try to boot Mint it tells me... error: no such device: 50863d03-...
Nate Young's user avatar
2 votes
1 answer
868 views

Ubuntu won't boot after removing windows and extending partition

I had a dual boot (windows 10 and Ubuntu 16) on a dell laptop. I removed the windows partition and extended the Ubuntu one. Since I cannot boot Ubuntu. I tried reinstalling GRUB with boot-repair. I ...
Yoan's user avatar
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How much space can I dedicate with this hardware? [closed]

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 465.8G 0 disk ├─sda1 8:1 0 165.5G 0 part ├─sda2 8:2 0 450M 0 part └─sda3 8:3 0 299.8G 0 part sdb 8:16 0 ...
Klaus's user avatar
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Boot problem when trying to install linux over a flash drive

When I first booted into my Ubuntu flash drive, it booted into something called "GNU GRUB", like this: What is it, and how can I get Ubuntu working?
Luke Olthouse's user avatar
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Cannot boot into Ubuntu after installing Windows

I have installed Windows 8.1 after installing Ubuntu. grub is not loading so I lose access to Linux. I am unable to boot from my installation disk, as my system just instantly reboots without any ...
MR_BD's user avatar
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Grub2 booting MacOSx ISO

I need your help! I have Ubuntu installed and a chainload with the Windows Boot Manager! And now I read about grub2 that it is possible to boot an ISO directly with grub2. For Windows I needed the ...
user643469's user avatar
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Ubuntu 16.04: how to boot into nomodeset from GRUB2 tty? Laptop with only NVIDIA M1000M

I installed Ubuntu 16.04 on a laptop solely equipped with NVIDIA M1000M graphics card. During installation I was able to edit the boot options from the GRUB menu (the one with try without installing, ...
Puppy Cyber's user avatar
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16.04 LTS install issues on dell optiplex 5040; not recognizing hard drive

I have a Dell Optiplex 5040 that I would like 16.04 LTS ubuntu to run on. I was using this page How to Install Ubuntu Linux on your Dell PC as a guide. My system uses M2 PCIe, so I followed this sub-...
Nicole DelRosso's user avatar
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How to fix start of Windows 7 after Ubuntu Gnome 16.04 LTS instalation?

In GRAB: 1) Windows 7 (loader) (on /dev/mmcblk0p1) 2) Window 7 (loader) (on /dev/sda1) When I'm selecting 1-st: error: no such device: B4FE-5315 the volume assigned equeal 0x83 error: invalid ...
Curious's user avatar
6 votes
2 answers
14k views

Ubuntu on a USB stick - boot in both BIOS and UEFI modes

I'd like to have Ubuntu installed on a USB stick, that I could plug in (almost) any computer and boot from it, and that I could use (almost) normally, as if it was installed on that computer. I'd also ...
CidTori's user avatar
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How to prevent GRUB wipe effect

I recently switched graphics cards from a Radeon 5850 HD to a EVGA GeForce GTX 950. With the Radeon card, the GRUB screen would just appear, but with the EVGA card, the screen takes a few seconds to ...
bwroga's user avatar
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Ubuntu Server 16.04.1 LTS and MSI N3150I ECO fails to boot after install

After installing Ubuntu Server 16.04.1 LTS on an MSI N3150I ECO motherboard with 64bit processor, 2TB drive, the system fails to boot. I have clear legible screen through the entire install process. ...
bcgrafx's user avatar
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triple boot with second Ubuntu installation on second drive

Current Situation: I already have a dual boot system with Windows & Ubuntu on first hard drive. Desired Situation: Add a second installation of Ubuntu on a second drive (and pick desired OS on ...
user1470475's user avatar
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I have a lot confusing boot options on startup

After I installed Ubuntu and did the recommended boot repair in it, when I restarted my laptop, I saw a lot of boot options as shown below. I think I should have just four items in the boot menu: ...
ARP's user avatar
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Ubuntu and Windows Boot Manager boot options in BIOS

I just put a blank SSD into my laptop, but at boot time there are two options in the boot menu that I don't understand: Ubuntu and Windows Boot Manager. What are these and how can I remove them? The ...
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1 answer
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Minimal BASH-like line editing is supported - GRUB error - Ubuntu 16.04, luksPartition, boot-repair does not work

Just after starting my laptop I am seeing black screen with the message in the title. This has happened when I've had 2nd drive connected to my laptop and I've installed fresh Ubuntu 16.04 on it. ...
Tom Raganowicz's user avatar
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Can't run UBUNTU 16.10 neither from USB

I installed Ubuntu 16.10 (in dual boot with Windows 10) on my Asus laptop a couple of months ago. Everything was fine for the first two weeks, than I could no longer selected Ubuntu at boot and ...
Iacopo Cassai's user avatar
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Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0, 0) (grub resolution)

I have tried to change ubuntu resolution via grub and just after i did -update grub, this error came up. Since i am very new with ubuntu, i have no idea yet how to solve it. Kernel panic - not ...
MGT's user avatar
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what do I do this happened [closed]

Ran into a problem: Please help me if you know what happened tell me how to fix it I'm on my phone right now.
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Other way to install ubuntu

I want to install Ubuntu in a notebook in witch I have already installed windows 10. I know how to do that but I also know that if I uninstall ubuntu I'll lose grub. I don't have a cd with windows, ...
Yes92's user avatar
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Ubuntu gave up waiting for root device, UUID does not exist, dropping to shell, when booting from a new kernel

I have installed ubuntu 16.04(linux kernel 4.4.0.31) on my intel baytrail tablet. I am trying to install a different linux kernel (3.16.0). When I boot through the default kernel(4.4.0.31), the system ...
Sanjeev Kumar's user avatar
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1k views

The right place to install GRUB bootloader and the best configuration to install Ubuntu (and something else)

I know the question could be a bit repeated, but I've seen so many tutorials and opinions so I prefer to post about my facts (or problem, depending the point of view): I've successfully booted up ...
user103837's user avatar
1 vote
2 answers
28 views

How to partition my drive in ubuntu?

I wanted to install ubuntu is along side windows but my windows were erased somehow. Anyway, I have windows cd but not partition to install it in dual-boot. SO can u pls tell me how I can partition ...
Aryvd's user avatar
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How to fix Windows 10 Boot error while dual booting throuh Grub2

I recently Installed Ubuntu 16.04 alongside Windows 10 on my Lenovo Ideapad Z500 laptop. The laptop came with Windows 8 pre installed, which I upgraded to Windows 8.1 and then to Windows 10. I am ...
Sumit's user avatar
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1 answer
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Where do I find all GRUB options?

I am looking for a list of all GRUB2 options with an explanation and all possible values. I tried it here and there. But I am missing options like: net.ifnames biosdevname acpi_enforce_resources I ...
musbach's user avatar
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Two Windows Boot Managers?

I was installing ubuntu alongside Windows and when I ran $ efibootmgr I was greeted with BootCurrent: 0006 Timeout: 1 seconds BootOrder: 0005, 0004, 0003, 0000, 0006, 0002, 0001 Boot0000* HDD/SSD ...
Kev's user avatar
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1 answer
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Installing Ubuntu to /sdb internal M.2 SSD - Bootloader Question

Question: When installing on my M.2 SSD (labeled sdb), it prompts me to choose a place for a boot-loader. I've tried several and get a blank screen. Installing to HDD (sda) works fine. Where do I ...
SomaComa's user avatar
1 vote
0 answers
39 views

Windows 7/8/Ubuntu 16.10 Triple Boot Issue

Okay, so my issue with this is the fact that whenever the initial grub screen boots, I am able to see my Ubuntu boot option, and I can see Windows 8.1, but I cannot see Windows 7. The only way I can ...
NebulaCoding's user avatar
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1 answer
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How do i figure out the user name on a laptop I bought [duplicate]

I changed the password but I don't know how to do the username
John Landsborough's user avatar
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Can I modify my existing x86-64 BIOS-based USB installation to also boot on a Mac?

I have a USB installation of Ubuntu. It's a bootable usb drive (but not a Live version, it's a full installation). Its grub is set into BIOS mode, installed on /dev/sdb with the Boot Flag. What can I ...
Eugenia's user avatar
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Can I turn an EFI-based USB Ubuntu installation into a plain bootable drive?

So, here's the story: I created a Live USB drive and booted with it on my new (UEFI) DELL laptop. I installed Ubuntu on a second USB drive (full installation on a USB drive, not on the internal drive)...
Eugenia's user avatar
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unable to install ubuntu on alongside windows 10. Grub install /dev/sda failed [duplicate]

Note: I have already checked all the answers available on stackoverflow and various other forums. But could find no solution that would help me solve "grub install /dev/sda failed fatal error" I ...
Mukund Gandlur's user avatar
1 vote
0 answers
874 views

Ubuntu installation stuck on first step!

I'm trying to install Ubuntu on my GL552-vw ASUS laptop from a USB flash. But At the first step after hitting Install Ubuntu I stuck in the loading page: This is what happened under the hood: What's ...
Ebrahim Ghasemi's user avatar
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1 answer
653 views

Grub not showing after dual booting ubuntu

I have an acer laptop and after dual-booting, it brings me back immediately to windows. When I check the bootloader, Ubuntu is not there. I've also tried using the command bcdedit /set {bootmgr} path ...
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Dual booting Ubuntu & Windows from an encrypted disk

I have a dual boot system with Windows 10 and Ubuntu 16.04. Windows is installed on sda1 and Ubuntu on sda5. Everything was working fine until I encrypted the whole disk from windows using Symantec ...
Rahul's user avatar
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421 views

Install compiled kernel alongside existing kernels

I would like to compile a version of my existing Ubuntu kernel, and install it alongside my existing kernel version. I hoped this was very simple! I followed the directions on this wiki page, which ...
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ubuntu 16.04 boot option disappeared on Lenovo Y700

My lenovo is dual booted with Ubuntu 16.04 and windows 10, and normally when i start up, i get the Grub options to choose between these two (and some others). but now my grub wont show, and pushing F2 ...
bartolo 05's user avatar
3 votes
0 answers
961 views

Normal boot hangs on "Scanning for BTRFS files systems" after conversion from ext4

I have a headless server with an installation of Ubuntu 16.04. The default installation comes with an ext4 file system and reinstalling it from scratch is not possible, but I need the snapshot and ...
kcrk's user avatar
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2 votes
1 answer
713 views

Why is Ubuntu's grub2 menu made the default grub menu? Is it possible to change it?

I have 2 hard disks — a 240 GB SSD and a 2 TB standard disk. I put Windows, Linux Mint, and Ubuntu 16.04 on the SSD, the sda and Fedora and Kali Linux on the 2 TB disk, sdb. Now, as I was installing ...
skrowten_hermit's user avatar
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1 answer
565 views

Erasing raid metadata

I'm installing Ubuntu on my Dell XPS 15 9550, but I have problems with setting up grub. I get errors connected with efi partition access problems like: grub-efi-amd64-signed failed to install into /...
user2091046's user avatar
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1 answer
738 views

Ubuntu Server Very Slow Boot up

I installed ubuntu on a PC "server" for offline development purposes but im having slow boot ups. When i press the power button the system goes straight to the CRUB menu for about 2 seconds. But then ...
Dean Jansen's user avatar
1 vote
2 answers
849 views

Cloning hard drive question

I run Win XP and Ubuntu on my desktop. The HDD that Windows is installed on appears to be getting ready to die (loud noises). I'd like to clone it but don't know how it would affect my Linux.(...
user640429's user avatar
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1 answer
713 views

Cannot get to install screen via USB - Surface Pro 4

I was previously able to install and get Ubuntu 16.04 up and running via USB stick. After using it for a week I decided to do a factory reset of windows 10 and re-partition to allow me to allocate ...
Kevin Schmidt's user avatar
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2 answers
661 views

Will formatting a USB drive remove the Ubuntu Bootloader installed in it?

I have a PC, where I installed Ubuntu on the hard disk, and the bootloader on the USB drive. Please don't ask me why :P . I Want to know the answer if the formatting is done normally, using the right ...
Noel Augustin's user avatar
2 votes
2 answers
11k views

How can I disable Grub from appearing after selecting Ubuntu in Refind menu?

I'm pretty new to Ubuntu but for the most part I've been able to set up everything the way I want. I'm using an HP Spectre with Windows 10 and Ubuntu (UEFI). The only thing I'm struggling with is ...
mjm2z's user avatar
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445 views

How to make xubuntu boot faster on old computer?

I recently reinstalled my computer with xubuntu to 16.10 with hopes to get faster boot again, but boot still takes about two minutes. What settings do i change to prevent already checked checks and/or ...
Nomo Hakon's user avatar
1 vote
0 answers
466 views

Grub rescue - unable to set boot partition

I don't know how it happens but I became unable to start my system kicking to grub rescue command prompt. I know that my system is installed on /dev/sda6 and ls in grub rescue shell gives me: (hd0), (...
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