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Questions tagged [grub]

GRUB (GRand Unified Bootloader) is a multiboot bootloader from the GNU project. This tag is for questions relating to the legacy version of GRUB. Use the GRUB2 tag for questions dealing with GRUB2, a rewritten version.

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Windows boot was strangely overwritten by GRUB while Kubuntu installation

So, i have: SSD with Windows HDD with Linux HDD as storage After reinstalling linux on first HDD somehow it didn't show up on main boot manager list in UEFI, but it's still visible as storage ...
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1answer
28 views

How to change hugepages in Debian

I try to reserving Hugepages for DPDK Use. I change the configuration in /etc/default/grub like this: GRUB_CMDLINE_LINUX_DEFAULT="crashkernel=1G-:256M quiet default_hugepagesz=1G hugepagesz=1G ...
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1answer
13 views

Gigabyte H110-D3a won't boot from GRUB USB running Arch

This issue seems to be pretty common on the web, but I can't seem to get anything to work. Basically, I've created a persistent Arch USB that's set up for mining. It boots and runs fine on my PC and ...
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30 views

Booting Windows installation, while the files aren't in the root directory, from pendrive with grub2 installed

When I install grub2 with grub-install command on pendrive with one ntfs partition, open .iso file with Windows, and copy all the contents of it into its root directory, I can successfully boot the ...
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1answer
25 views

Can't boot into windows 10 bootable flashdrive

I can boot into a manjaro linux bootable usb but not a windows 10 bootable usb. grub rescue mode launches everytime. Any suggestions?
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0answers
19 views

windows bootloader accidentally removed from a dual boot system

I'm using Windows as a second OS and as I was trying to reinstall Linux I accidentally formatted the old /boot. now Linux is booting as normal but the Windows bootloader won't show in the grub menu. I ...
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1answer
46 views

GrubX64.efi not found error

Facing grubX64.efi not found with UEFI boot install. I am using rufus to convert it to usb and the strange part is, EFI folder(iso) has the following files: "BOOTIA32.EFI,BOOTX64.EFI,fonts,grub.cfg,...
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0answers
25 views

Can't update GRUB

Rebooted my server running Ubuntu 16.04 yesterday and since then I have been unable to update GRUB. sudo update-grub Generating grub configuration file ... grub-probe: error: not a directory. sudo ...
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38 views

Windows only boots from GRUB with certain option

So for a long time I had a dual boot system going with Win10 and a Debian Stretch distro. Everything worked completely fine until I planned on encrypting my Windows partition and therefore took the ...
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2answers
73 views

grub loaders in /boot/efi/EFI can't boot windows, /boot/efi/EFI/ubuntu/grubx64.efi can, grub installs the one that can't

I'm running ubuntu 18.04 (kubuntu, but who's counting) on a dual-boot system. Its grub menu was always able to boot windows 7, but suddenly, the windows entry in grub no longer works. When I select ...
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0answers
23 views

Grub rescue after deleting kali linux partition

my system has windows 10 already installed after that i tried to install kali linux but the installation didn't go right the kali linux's grub was installed but cannot launch neither windows 10 nor ...
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0answers
24 views

Removing an OS without disturbing other OSes

What's would be the easiest approach to remove Debian from my system? I have 3 OSes on my laptop as shown in the output of lsblk --output NAME, SIZE, LABEL Output: NAME SIZE LABEL loop1 81....
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0answers
23 views

on multiboot after ubuntu18.04 install now starts straight windows7

There are 3 linuxes and 1 win7, the last installation (Ubuntu 18.04) has broken the grub boot loader and now starts directly win7. I have used Boot-Repair, and it says "problem solved" but always ...
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0answers
39 views

unable to boot using usb and grub rescue

i had windows 10 and lubuntu dual booted on my laptop. I wanted to try windows xp, so flashed it into a USB and tried to boot from USB using boot options. The laptop did not boot from USB and took me ...
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0answers
22 views

Cannot start W10 anymore after reinstalling linux on separate disk

I have linux and W10 installed on separate disks. Here is my dual-boot setting: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 111,8G 0 disk # SSD ├─sda1 8:1 0 550M ...
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1answer
35 views

BitLocker automatic unlocking stopped working after updating grub from Linux

I bought a new laptop from Dell with Windows 10 Pro. It had a BitLocker encryption enabled by default, but it was suspended. I activated the protection and saved the recovery key. Then i installed ...
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1answer
102 views

grub-efi-amd64-signed won't install to USB drive

I've been trying to install Linux Mint to a 20GB partition on a USB drive (Kingstion DT Elite G2 - 64GB) on a laptop (HP Pavilion 10 TS Notebook PC) but have always gotten the following error message: ...
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0answers
57 views

Linux install : Grub on SSD, Ubuntu on HDD

I'm trying to install Ubuntu on my new laptop. I have a small SSD and a big HDD, and I want to have : SSD : Windows HDD : Windows + Ubuntu The problem is that the SSD uses "Intel RST" mode (...
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0answers
15 views

Reinstall grub on serveur (Kimsufi)

I really messed up my grub and cannot boot from disk anymore, I have to boot with the netboot. Any good link on how to reinstall grub correctly on my server ? Thanks. PS: my os is debian 8 and I ...
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0answers
20 views

No more Grub screen after Grub updates

I have Linux and Windows on separate drives, and had grub screen on boot working perfectly. Yesterday I went into update manager, and updated everything, including a grub2 update. Now when I boot, ...
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2answers
108 views

Grub 2.0.2: Cannot boot to Windows 10 (dual boot with Ubuntu 18.04)

Today, when turn on computer and chooise boot to Windows 10, I got this error: "relocation failed" The last time I use computer is Ubuntu 18.04 and I make some update with "apt update && apt ...
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0answers
49 views

ubuntu 18.04 upgrade failed for UEFI

After I upgraded my Ubuntu 16.04 to the latest 18.04, now my laptop doesn't start up at all and gets stuck at the grub command line. I have tried boot-info and boot-repair, in UEFI and BIOS mode (from ...
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1answer
117 views

Dual boot with Grub Ubuntu / Win 10 no longer available with Win10 Ver 1803 update

Dual boot with Grub Ubuntu 16.04 / Win 10 broke when Win 10 automatically updated to Version 1803 in August, 2018. Windows overwrote the Master Boot Record and the Grub menu has disappeared. Ubuntu ...
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0answers
30 views

Grub installing in wrong drive

I have two drives one ssd and one hdd in my hp laptop, windows 10 is installed on the ssd, I have been trying to install linux mint in the free space in the hdd. I have been using this as a guide: ...
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0answers
16 views

“Missing Operating System on iMac after installing ubuntu 14.04”

I have a late 2009 iMac on which I tried installing ubuntu 14.04, removing the OS X. At the end of the installation, for some reason, it didn't install the grub bootloader. I thought I could manually ...
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2answers
59 views

Stuck on GNU GRUB screen

I brought a computer with Ubuntu and I tried to install windows 10 from a usb (I do not know why it did not work from a USB, error while loading files) so I entered the bios and deselected safe boot ...
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0answers
30 views

Installing grub bootloader?

So, I'm sort of new to this whole Linux thing. I have one drive with a windows partition and an Ubuntu partition. I'm trying to install grub so I can choose to boot to either Ubuntu or Windows. I ran ...
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1answer
26 views

GRUB from windows?

So, basically, I have a dual boot setup with a windows drive partition and a linux drive partition, but I can only access the Windows partition and need Grub to get into Linux... which I need to get ...
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0answers
7 views

Windows boot record error / Grub error

Just installed windows. Usually I boot from my BIOS with 'Windows Boot Manager' boot option. How or why I have to do this I don't know, but if I boot directly from the desired drive an error appears ...
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1answer
40 views

how to find what media I originally booted from?

I am in an installer (a linux in a ramdisk) and I want to eject the CD if it was what the BIOS originally booted from (you know, the boot order menu), is this information available somewhere in /proc ?...
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3answers
39 views

How to add an already installed Linux to Windows boot loader?

Is there anyway to add an already installed Linux(preferably Kali Linux) to windows boot loader? I had both Windows and Kali working fine using GRUB boot loader. After my windows got corrupted and I ...
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1answer
17 views

frozen computer after messing with grub

I have messed up: I have an asus laptop, just installed 18.04, and might have changed a line in /etc/default/grub by mistake. Now when I turn the laptop on, I can get to the login, but just get a ...
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0answers
36 views

Why is my custom centos kernel not booting? No source changes were made

I followed this guide to rebuild my 3.10.0-327 kernel (CentOS 7.2): https://wiki.centos.org/HowTos/Custom_Kernel I will be making changes to it, but even if I make no source changes, it does not boot ...
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0answers
42 views

Grub doesn't detect new Kernel

I just installed a new kernel on my Linux Mint 19, I moved the all the files into the /boot/ directory, but to be precise I didn't even do it myself, I used a utility called Ukuu Kernel Update Utility....
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1answer
95 views

Remove boot option in Windows Boot Manager that is not listed in bcdedit

I've accidentally installed grub2win in order to configure a multiboot setup witch a Linux distro. I've figured out that the correct way is to create an EFI partition and install the 'real' GRUB. This ...
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0answers
26 views

GRUB rescue after deleting linux from HDD

I have SSD and HDD in new laptop. By default linux (EndlessOS) was installed on HDD. After successfully instaltion Windows10 on SSD I tried to delete data from HDD by GParted, then when I rebooted I ...
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0answers
35 views

Deleted Ubuntu partition. Now Windows nor Linux can start due to GRUB's normal.mod not found

I had Windows 10 and ElementaryOS Freya (Ubuntu 14.04) installed and both booting happily through GRUB. This is how my disks were set up: /dev/sda /dev/sda1 ntfs 420MB /dev/sda2 ntfs 210GB - ...
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1answer
51 views

How can I reclaim partitions from unused dual-boot, without breaking existing OS on same drive?

I run Linux Mint at the moment; at one point I dual-booted Windows but I broke that by mistake about a year ago, wasn't able to fix it (even reinstalling from disc failed, I think it was something ...
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2answers
138 views

Can't enter to BIOS after debian install - black screen

I have Acer Aspire laptop with Windows 10. Recently I've installed Debian 9 in a different partition and everything went fine. The second time I tried to boot into BIOS I got a black screen with a ...
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0answers
10 views

boot from root of damaged elementary os laptop macbook pro 2013

Elementary OS is the only OS I have installed on my laptop, and after trying to install mint, I cannot boot onto eOS. I can only boot onto grub. I have a usb with mint iso. I want to completely format ...
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1answer
114 views

Prevent GRUB updates from changing EFI boot order

I'm currently working on a tripple-boot system with Ubuntu 18.04, macOS and Windows. The standard bootloader that the firmware (ASUS Impact VII, APTIO-based EFI) is supposed to launch is Clover. ...
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1answer
131 views

EFI fails to boot Linux with GRUB - blinking cursor screen of death

I bought an HP Probook x360 11 G1 EE laptop with an EFI boot and Windows preinstalled. Since there's no option in the BIOS to support legacy boot, I can't do without EFI. I tried EasyBCD to install ...
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0answers
27 views

Grub load for another HDD

I have current configuration in my Debian system: Model: ATA WDC WD1003FBYZ-0 (scsi) Disk /dev/sdd: 1000GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start ...
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2answers
51 views

Boot GRUB to entry not booted to last time?

I'm not sure I'd actually do this, but is there a way to make GRUB automatically select the boot option I didn't use last boot? i. e. If I booted into Windows last boot, it selects Ubuntu. If I booted ...
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204 views

GRUB for RaspberryPi 3 with raspbian

Is it possible to boot Raspbian on RPi3 with Grub? I have managed to load grub on RPi3, but I cannot load Raspbian by Grub. What do I wrong? Or is it possible that GRUB does not support Raspbian? ...
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0answers
26 views

Ubuntu wiped grub?

I tried to install dual boot Windows 10 and Ubuntu. I installed Ubuntu 18.04 after Windows. The GRUB menu disappeared now my pc only boots direct into Ubuntu. I am a novice and dont know whether the ...
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1answer
40 views

Linux fails to boot or install on pentium 4 machine

I have an old computer, pentium 4 3GHz 32bit and 1GB of RAM, 250GB HDD (newer). The HDD was blank since I bought it separately, and I wanted to install Linux Mint on it. I made a bootable USB drive (...
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0answers
46 views

Oracle VM Server installation goes to blank screen after loading to initrd

I'm using my old laptop (Lenovo Z500) to build my on VM environment. The laptop has i7-3630QM processor an a Nvidia 740m graphics card. I was able to create a bootable USB of Oracle VM Server. When ...
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0answers
135 views

Debian + Grub Error: “no such device” and “file /boot/vmlinuz-4.9.0-6-adm64 not found”

Problem: I installed Debian 9.5 and the installation was successful but when trying to boot it on grub I get this message: error: no such device: <giant device uuid>. error: file /boot/vmlinuz-...
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1answer
130 views

How to remove GRUB from Windows 7

Someone really messed up the build machine here. Looks like they tried putting ubuntu on it, failed, and left it all porked up. And I cant figure out how to fix it. I do not have a windows disk but ...