GRUB2 is the second revision of the GRand Unified Bootloader, with versions numbered 1.9x and 2.yz.

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2
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1answer
164 views

How does grub2 find its configuration file in EFI boot?

There are bazillions of grub2/EFI threads on the net, but I found it difficult to find an answer to the question above. We have been told that in grub2 the configuration file is /boot/grub/grub.cfg. ...
0
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3answers
76 views

changing grub boot drive

I just installed a new SSD and I want to move all the files from the HDD to my SSD. I cloned the partitions from the hdd to the ssd. I run on a dual boot - windows 10 and ubuntu 15.10. So, now I have ...
4
votes
1answer
2k views

arch linux- error:failed to get canonical path of 'airootfs' (grub to USB installation)

I'm trying to install arch-linux for the first time. everything was OK till I tried to install "grub" boot-loader to a USB drive. I am working by the WIKI ARCH LINUX guide. both of this commands ...
0
votes
1answer
76 views

Linux Mint and android x86 grub repair

I installed on my laptop an .iso of android. I have partitioned it the way that Linux Mint would stay on sda1 and Android on sda3, but now I don't see anymore the option to boot Linux Mint on the grub ...
0
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1answer
40 views

System fails to boot after Linux installation

I have installed kali linux. But when I try to boot I receive the following message as shown in the figure: May be because of wrong GRUB configuration. How can it be fixed?
0
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1answer
53 views

How would pressing backspace 28 times break Grub2 [duplicate]

I just came across this article about how pressing backspace 28 times on the grub screen. Since most mainstream media just says this happens, I've been unable to find anything that explains how it ...
0
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0answers
107 views

Adding Windows 10 Boot-record to Syslinux [Dual-Boot]

I replaced my old Debian-based OS (which dual-booted alongside Win10) with Arch, and replaced the GRUB Bootloader with Syslinux. So now, I have: Running Arch Linux x86_64 SysLinux with Arch Linux as ...
2
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2answers
81 views

My computer is booting to a full purple screen and asking for a username and password

Yesterday I reboot my computer to find out something went wrong the computer does not boot after about 10-15 sec after I press the power button it goes to a full purple screen I can't do anything to ...
1
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2answers
1k views

GRUB2 security vulnerability: pressing backspace 28 times: What are my risks? What should I do? [closed]

There have been reports yesterday about a new security vulnerablity: Lucian Constantin (2015-12-16). Vulnerability in popular bootloader puts locked-down Linux computers at risk. CSO Online. ...
2
votes
1answer
98 views

Difference between sd0/sda, hd0/hda

From what I understand, hdx is naming convention for IDE (PATA) drive, sdx is for SCSI (SATA) drive. Sometimes I see sd0 and sda, similary hd0/hda. What are their differences ? When would we use ...
8
votes
1answer
150 views

Is there any way to boot from iso while running system from live disk?

This is bit complicated question let me explain what is expected: I know that we can add GRUB menuentry with location of ISO file and boot from ISO using GRUB entry. (i.e this method) But suppose ...
0
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0answers
60 views

How to delete Ubuntu without damaing another Linux distro?

I have 3 partitions on my computer they're dual-boot, Red Hat, Ubuntu & Windows 8. I want to get rid of Ubuntu and keep Red Hat & Windows 8. What would be the safest route to achieve my goal. ...
1
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0answers
2k views

Dual boot fedora 23 and Windows 10 issue

I had Windows 10 installed on my machine. When I decided to also install Fedora 23 using Dual boot, Fedora was working fine, but when I tried to boot Windows 10 I had a problem. In the grub boot menu ...
0
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0answers
25 views

Grub on 2 partitions, only want on one

Some context to start: Have Windows 10, Ubuntu, and Kali 2 installed as a triple boot configuration on my laptop. I recently installed Kali 2 after having just Win 10 and Ubuntu as I was interested ...
1
vote
0answers
273 views

Unable to shutdown Windows after installing GRUB

(Hope this is the right place to ask this) I've a Asus ROG laptop that came with Windows 8.1 preinstalled, I upgraded it to Windows 10 and then I wanted to install Bunsenlabs Linux as dual boot. The ...
0
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0answers
61 views

Ubuntu is not listed on the GRUB

I installed Fedora23 on a GPT partition(also chose LVM option). There is no option now for Ubuntu on the GRUB list when I boot normally (without interfering). However, if I hit F9 on bootup and go ...
1
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0answers
325 views

grub2 cannot see filesystem on alternate /boot partition

I have 2 (soon to be more) independent OSes. Right now it is just CentOS 6.6 and 7, but will be adding several more. I can boot CentOS 7 cleanly, but 6.6 will not boot. The error is: error: no such ...
0
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0answers
40 views

Can grub2 on an MBR disk boot linux partitions on a GPT disk?

I have grub 2 running win 7 ultimate, win 8.1 and win 10 as well as 50 or so linux partitions that boot off of the grub 2. Can I add more entries to the grub 2 on one of the mbr disks that will boot ...
0
votes
1answer
141 views

Install Grub2 UEFI Fat32 to EFI - No Linux OS

Ok, so usually (correct me if I am wrong), but when you install Grub, part of it gets installed inside the Linux OS. /etc/default/grub or /etc/init.d/grub etc etc. My Goal is to get Grub2 to be my ...
1
vote
1answer
308 views

Grub not showing windows

So I decided to dual boot kali linux and windows 8. I follow the tuts in here http://docs.kali.org/installation/dual-boot-kali-with-windows But when everything is done and I reboot, grub not showing ...
0
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0answers
26 views

boot .iso image using Grub

Has anyone been successfull in setting up GRUB2 to boot an .iso image stored on the harddrive. Instead of installing it on a disc on flashdrive. I have been successfull in setting up a windows ...
1
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2answers
2k views

grub menu not showing in dual boot Linux mint 17 & windows 10

I know that this is a common problem but my situation is a bit different. I had a perfectly working Linux Mint 17.2 and Windows 10 in dual boot with grub menu showing and giving me options on what to ...
0
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0answers
112 views

Unable to get past grub or BIOS

I have an Asus X200CA. It came with DOS. I installed Linux Mint (which is based on Ubuntu). It was working well until one day a USB stick was pulled out without removing it safely. At the next bootup, ...
2
votes
1answer
170 views

How do I clone a single drive onto a new RAID 1 array?

Here's a little background on the situation at hand. I have a DELL Precision T7600 at work that I'm responsible for maintaining, which just lost a hard-drive, thankfully just the /home directory was ...
1
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1answer
433 views

grub2 gone everytime I boot Windows 10

I installed Windows 7 on a SSD and upgraded it to Windows 10. Then I installed Linux mint 17.2 Cinnamon and had the following partitions: The boot menu was showing Linux Mint and Windows 10 and I ...
1
vote
1answer
65 views

Boot problem with grub; Arch Linux, Xen, DomU

Inside my Dom0 My error log: sudo xl create /etc/xen/arkOS-Dev_PV.cfg /var/log/xen/bootloader.1.log pyGRUB version 0.6 ...
2
votes
2answers
349 views

No grub menu after Ubuntu install, booting directly into Ubuntu

I have two separate SSD's. One of them has Windows 10 Pro installed, and the other has Ubuntu 14.04.3 LTS. When my computer boots I get no grub menu to choose the operating system I want to boot ...
1
vote
1answer
121 views

GRUB Menu Not Visible

I have a bootable external USB drive with Ubuntu 12 LTS, which I move between two PCs. On one machine I see the normal progression from BIOS boot device menu -> GRUB menu -> normal system splash ...
1
vote
1answer
238 views

Boot problem with grub; Arch Linux, Xen, Dom0

After installing Arch I installed grub with these commands: pacman -S grub grub-install --target=x86_64-efi --efi-directory=/boot --bootloader-id=grub --recheck grub-mkconfig -o /boot/grub/grub.cfg ...
2
votes
0answers
103 views

how to use grub-uboot

On an ARM-based device, I'd like to chain-load uboot->GRUB->Linux I see there is a Debian package that seems to be made for that, however I can't find no documentation whatsoever how to use it (ie. ...
0
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0answers
339 views

Add Android x86 5.1 RC1 to GRUB2

I just installed Android x86 5.1 on my Laptop and tried to boot it. But sudo update-grub2 neither added nor detected Android. I did not install GRUB2 from the Android x86 installer, because it needed ...
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0answers
141 views

Can I disable the intergrated gpu in my optimus laptop to use only the Nvidia GPU?

My BIOS does not include an option to disable my intergrated GPU, bumblebee/primusrun provide terrible performance, nouveau doesn't support 900 series GPUs (and has subpar performance too anyways) and ...
0
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0answers
12 views

Boot menu weird bug: Not every selected entry gets highlighted

I have a dual boot system with Linux mint and windows 8. At the start up the boot menu (grub) appears as usual. The weird thing is that the entries in the boot menu are highlighted only every second ...
0
votes
0answers
45 views

Grub2 displaying 4 entries after CentOS7 update

I'm new to CentOS, but I'm familiar with general Linux command line. After installing CentOS, I ran "yum update" as root and now my grub displays 2 more entries: CentOS Linux ...
1
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0answers
115 views

Booting DragonFly BSD with GRUB2Win fails

After manually adding insmod part_dfly in GRUB.cfg, partition search by file does find loader. Then, rather than Dragonfly booting, only blank screen appears. GRUB has an elf.mod so the reason is ...
0
votes
1answer
144 views

Getting grub terminal after removing Ubuntu partition and unable to boot into Windows

I deleted my Ubuntu partition cause I wanted to install Linux mint. But now when I switch on my laptop, I'm unable to boot into Windows. I'm getting a grub terminal (not sure if it's grub rescue mode) ...
0
votes
4answers
483 views

How can let grub boot Kali directly instead of giving me a command line on boot?

I Installed Kali Linux 2.0 64bit (full version) using USB device in dual-boot with Windows 10, done without error if I remember well. My device is an Asus TP300LA (UEFI), enabled CSM in bios, and ...
4
votes
1answer
494 views

How to fix a very broken grub?

I have a very broken Fedora 22 install. Everything was working absolutely fine until I decided to dual boot F22 and Linux Mint MATE. I had Fedora installed on an SSD, and I installed LM on a ...
1
vote
1answer
27 views

How to set which GRUB loader to use after dual booting two Linux OSes?

After installing Kali and accidentally its Grub-loader, I want to change it to the previous one of my Ubuntu installation. The reason is that the Ubuntu grub-loader can Secure boot while Kali's does ...
0
votes
0answers
32 views

Why do Linux ISO's boot to grub?

I'm trying to re-install Debian 8 on my SSD after recently deleting my Debian 8 partitions, but it doesn't seem to boot like I'm used to. Instead, of the normal grub screen to begin installation, it ...
2
votes
1answer
654 views

GRUB not loading after installing OpenSuse TumbleWeed

Recently I decided to switch from Ubuntu to OpenSuse so normally I attained the TumbleWeed image from OpenSuse and began installing it. The installation process finished without any problem but after ...
1
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0answers
55 views

Different boot partitions for dual boot

I finally decided to manage partitions in my hard drive and install different OS's. I have used Ubuntu for a few years, and I'm fairly familiar with its installation. Now I want to try OpenSUSE, but I ...
0
votes
1answer
22 views

Live DVD hangs at GRUB2 on boot

I have a live Slackware 14.1 64-bit iso that hangs at "Welcome to Grub!". MD5 sums check out for the downloaded image. The computer in question has successfully booted live images of other operating ...
2
votes
1answer
25 views

Linux as 3rd boot OS

I would like to install another linux kali beside my linux mint and win10. My question is, do I need make 3 partition again for installation, /root /home and swap od I don't need swap because I ...
1
vote
0answers
629 views

Sign GRUB2 bootloader to enable UEFI secure boot

Following preliminaries: Linux 4.2.3-gentoo GRUB2 UEFI, Secure Boot off Now, I want to mess with the secure boot so I'm able to turn it on. More or less following this guide, I have: backed up ...
0
votes
1answer
39 views

grub-install fails when image is 64 meg and succeeds when image is 256 meg

In the two scenarios below the tst.sh script is exactly the same, except that dd creates a 64 meg image in the first case and a 256 meg image in the second case. (image size is defined by the count ...
0
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0answers
19 views

Linux Mint - Keep Grub2 on two independent HDD's

HDD partitions: sda1 efi/boot (grub 2.02 installed here) sda2 / sda3 swap sda4 home The above hard drive is installed internally with Linux Mint 17 as the OS. I have a 2nd external hard drive ...
1
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0answers
165 views

How to get the very first boot messages in high resolution

After upgrading to debian jessie I abandoned the proprietary nvidia drivers and switched to nouveau. I am using grub2 to boot. Kernel is 3.8.2 compiled from source. my graphics card is an nvidia ...
0
votes
1answer
57 views

Reset admin password in Cent OS 7 from grub [duplicate]

I just recently installed cent os 7 and I forgot the admin user password so now I couldnt log in and locked out. I entered the grub boot menu and tried to change the password using password command ...
0
votes
1answer
431 views

Grub not loading config file or booting into linux automatically

I was trying to dual boot elementary os with windows on my laptop (Asus Zenbook UX305). To do that I shrank the windows partition using the windows disk manager, and then used the Elementary ...