Questions tagged [grub]

This tag is ambiguous: use grub2 or grub-legacy as appropriate.

408 questions with no upvoted or accepted answers
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Can't install Manjaro

I want to install a 'nix operating system alongside my Windows OS but nothing seems to work. I have a 128GB SSD I use for Windows, and I'm trying to split my 1TB HDD between Kali Linux and Manjaro (I ...
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0answers
19k views

How to get to recovery mode if grub screen does not appear?

I cannot login my Ubuntu12.04 (which is VM running on OSX using VMWARE FUSION 6) because I have changed permission of /tmp for some purpose before rebooting the machine. Thus I tried to boot Ubuntu ...
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0answers
2k views

Ubuntu boot freezes after GRUB (blank screen), but works after warm reboot from Windows

I have a peculiar situation concerning the boot process of Ubuntu 17.04 that I just can't figure out. On my HP Pavilion 13b-220nd I have installed both Windows 10 and Ubuntu 17.04. My laptop boots in ...
4
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1answer
29k views

How to use os-prober to find MS-Windows boot data?

I saw Dual boot - Installed arch and windows entry disappeared on grub and I have the same/similar problem. I have Grub and it shows only Debian setup and not MS-Windows. I also tried the following ...
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0answers
737 views

Cannot Boot New Linux From USB

Recently, I got a new laptop, the MSI gx60. I grabbed a usb and loaded the Linux Mint 16 Cinnamon image onto it, tested it on my old laptop and desktop, where it worked. However, when I try it on my ...
4
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1answer
699 views

Using a custom name for root device in GRUB

I'm working on old distro ( slackware 8.1 ) using a kernel 2.4.37.9 and I have the following problem. I want to use a custom name for boot device, say for example /dev/root1, which can replace the ...
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0answers
51 views

How grub tells kernel where to find initramfs?

In grub there is the following line which loads the initramfs file into memory: initrd16 /<initramfs_file>.img But how actually does kernel knows that its init is in that image ? Is it some ...
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0answers
114 views

Grub not showing debian partition

I have a hard drive sda with 3 OSs: Windows 10 Debian Ubuntu After installing Ubuntu, Debian partition is not showing anymore. I tried to update the grub from Ubuntu: sudo update-grub This is the ...
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0answers
3k views

Why is initramfs dropping to a shell after installing Ubuntu next to a Windows 10 installation?

I have installed Ubuntu 18.04 LTS via Live USB on an ASUS Zenbook 13 UX331UN that is shipped with a preinstalled Windows 10. It is a UEFI system with secure boot enabled and fast boot disabled. I'm ...
3
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1answer
2k views

Why is unpacking rootfs image as initramfs slow

I have a new gentoo install and the only boot step that takes time is the one that says: Trying to unpack rootfs image as initramfs... It does take around 10 second at boot time. I tried to read on ...
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0answers
56 views

update-grub/os-loader doesn't see multiple Ubuntu installations on software Raid

I have two disks containing multiple software RAID1 (mdadm) partitions . I installed Ubuntu 14.04 on /dev/md0 and /dev/md2 (corresponding to /boot and /, respectively) and Ubuntu 16.04 on /dev/md1 and ...
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0answers
639 views

Only one of the two processor cores is recognized by Linux Mint on my laptop

My computer seems to have only one of the two processor cores operating. inxi CPU~Single core Intel Core2 Duo T6400 (-UP-) speed~2000 MHz (max) Kernel~4.4.0-53-generic x86_64 Up~2:40 Mem~1180.8/...
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282 views

Invalid partition table!

I had a dual booted system (dell inspiron 5000 series). But then I wanted to Remove windows os so I booted from live flash drive and opened gparted and directly deleted windows partition. Now I ...
3
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1answer
2k views

Booting to an encrypted Debian install, which has /boot on LVM-on-LUKS

I have a setup with a grub2 bootloader, and the rest of the system on an encrypted partition (LVM-on-LUKS). I have two OSes installed inside of the LUKS container, Kali Sana and Debian 8, as well as a ...
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0answers
713 views

grub2-mkconfig doesn't show Windows

After recently having installed Fedora on the same HDD as Windows, Boot manager no longer shows up in Grub2. When trying to repair what I've done by running grub2-mkconfig, it doesn't find Windows. ...
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798 views

Dual Boot Configuration with SSD and HDD

I'm very new to Linux. I have been using Windows/Mac during my whole life, but now I have decided to use Linux. So I'm trying to configure a dual boot system with Windows 10 and CentOS 7. I already ...
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0answers
1k views

Can I make the boot even more verbose than loglevel=7 using kernel parameters?

I have an error when booting on a machine, my machine is stuck with the error message: Booting a command list. I can see this message when I add loglevel=7 and only if I delete the quiet in the ...
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0answers
2k views

Mouse and keyboard not working (extreme lag) after fresh install Linux Mint 17.1

After installing Linux Mint Cinnamon 17.1 (32 bit) on my vaio z laptop, the mouse and keyboard start working for a few seconds, then freeze and continue to work very intermittently. For example, I hit ...
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115 views

Is the EFI boot loader not in MBR?

Based on this answer for detecting the boot loader I ran sudo dd if=/dev/sda bs=512 count=1 2>&1 | grep GRUB and it matched. However, I'm pretty sure I'm running Gummiboot since modifying /boot/...
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0answers
438 views

windows 7 reinstallation killed grub

I have been running dual boot windows7/ubuntu. Recently I reinstalled windows 7, and I no longer have the option to boot to ubuntu. I would like to be able to get my dual boot working again or at ...
3
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1answer
901 views

Generating grub.cfg without Linux installed

My dual boot machine went haywire yesterday, and seriously corrupted the Linux partition. Among the corrupted files were: The entire /boot directory Quite a few stuff in /bin "No problem", I thought ...
2
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0answers
35 views

Use ISO9660 USB for booting

I'm trying to boot from a USB drive that has an ISO file dd'd onto it with dd if=file.iso of=/dev/sdb. The ISO file was created using grub2-mkrescue, and it boots about half the time if I specify root=...
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384 views

Debian 10: No Bootable Devices

I am unable to boot into my new Debian 10 installation without using Super Grub Disk. This is a brand new Debian 10 install on a fresh hard drive. I am not dual booting -- the Debian graphical ...
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0answers
290 views

boot-repair: An error occured during repair

My grub partition got corrupted and I've been trying to fix it for a few hours. Right now it is empty, just formatted. Partitions on this device are as follows, in their order on the disk: /dev/sda2 ...
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0answers
3k views

Failing to boot Ubuntu 18.04 - “attempt to read or write outside of 'hd0'”

I am having issues booting and end up in a grub rescue shell. error: attempt to read or write outside of disk 'hd0'. Entering rescue mode... grub rescue> Searching around the web, i have found ...
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0answers
71 views

Creating from scratch a bootable M2 disk with backed up image of lvm partition with Linux Mint

I had created an dd image of lvm volume and I would like to restore it on a new pc. The older one is not available right now. On my old computer, I had 120Gb ssd with something like this: /dev/sda1 ...
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0answers
63 views

how to re-spin usb .img file to use a different bootloader?

I have a bit of a strange use-case, and after searching for 3 days, I am no closer than I started. So my goal is to install pfSense (freebsd based), onto a Beelink Z83-II. The only problem is that ...
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0answers
273 views

Arch Linux (k4.17) boot failure on Baytrail

I recently installed Arch Linux on one of the cheap windows tablet. I chose arch linux, because it had latest kernel, and in kernel 4.12 the rtl8723bs wifi driver was mainlined. I was surprised how ...
2
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0answers
567 views

GRUB and FreeDOS

I have a HD with GNU/Linux and FreeDOS flashdrive. I want to place those FreeDOS partition (2GB) on my HD. fdisk, dd, all things are o'key, but I can't make my GRUB load those OS. I was try all of ...
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0answers
516 views

How can I disable laptop internal keyboard in GRUB?

I am trying to disable my laptop internal keyboard, because I want to use my USB external keyboard placing it above the laptop keyboard. I am using GRUB to dual-boot Linux and Windows. I could ...
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0answers
2k views

How to prevent Windows 10 from clobbering GRUB?

Asking for clarification about: [1] How can I prevent Windows from overwriting GRUB when using a dual-boot machine Christopher's answer says: "Windows will overwrite the boot sector whenever you ...
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0answers
950 views

Ubuntu Server 16.04.3LTS Squashfs as root from Grub

I'm currently trying to setup an x86 64bit system to use a Squashfs as its root mountpoint, but i'm being met with many issues. Currently I am using 4.4.0-89 kernel compiled with Squashfs. I am ...
2
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0answers
458 views

Disk appears OK, will read/write in LiveCD, will not boot, stops at initramfs/busybox

Installed Ubuntu twice and Linux Mint once onto an SSD that used to be a system disk after Ubuntu was corrupted in upgrade. Every time, I get the same result. When I try to boot from the disk, I get ...
2
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1answer
809 views

After installing debian (to a USB stick) it won't boot

I have a chromebook. Linux is on it but I wanted a copy to boot from USB. Legacy boot is enabled and I was able to boot the install/live cd via USB. I installed to sdb and installed grub there too. To ...
2
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1answer
6k views

grub rescue: “failure reading sector 0x802 from hd0”

I lost power on my debian jessie laptop and now, when I boot it, I get: failure reading sector 0x802 from hd0 grub rescue> I tried: ls (hd0),(hd0,msdos1),(hd0,msdos2),(hd0,msdos5) then, I tried:...
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2answers
1k views

External Hard drive will only boot on one computer

I have an external drive with Linux Mint 18 on it. It boots to my desktop, which is where I used the live CD to install the OS onto the external drive. However, when I try to boot this external drive ...
2
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0answers
869 views

How to revert from “keep the local version currently installed” while Grub upgrade?

While doing sudo apt-get upgrade I was asked if to keep current version of grub config and have answered "yes". Now my system has no network. Message was "A new version of configuration file /etc/...
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0answers
30 views

grub - advance to the next drive

I've got /dev/sda and /dev/sdb, each with it's own MBR on a virtualized Linux server environment. I'd like to instruct grub on /dev/sda while booting to skip "self" and proceed booting off of /dev/...
2
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1answer
1k views

How can I manually replicate Manjaro Setup's automatic full-system encryption setup?

When I install Manjaro (16.10.3) from the LiveCD using the erase drive + encrypted option, it seems to create a setup like the following: Encrypted /dev/sda1 holding / and encrypted /dev/sda2 used as ...
2
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0answers
219 views

How to move a folder if I can't log in to my ubuntu?

My Ubuntu was working great but, I was having problems with a file that I thought was not in the right location, so I decided to move a folder called boot into a folder called root, and when I ...
2
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0answers
795 views

How GRUB determines the Linux root partition that it pass to the kernel with “root=”?

When the GRUB bootloader boots Linux, it pass the name of the root partition (where /sbin/init is) to the kernel through the root= kernel parameter in order for the initrd to be able to mount the real ...
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0answers
102 views

Macbook pro retina 2013 with full disk encryption boot issue

I have installed Ubuntu 15.10 on Macbook Pro Retina late 2013. It was working well until I break the boot by reinstalling grub. Now I am not able to repair it. I have three partitions: /dev/sda1 - /...
2
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1answer
301 views

No bootable medium after installing grub on laptop Acer Aspire

I've installed a new Manjaro Linux 16.06.1 on an Aspire V15 Nitro Vn7-572G-56VP. Before, there was a Linpus Linux installed. I recreated all partitions and installed Manjaro. I also attempted the ...
2
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0answers
61 views

grub PCBSD-GENTOO

I have a problem with the configuration of Grub. I installed Gentoo Linux, then I wanted to support PC-BSD, so I created a dedicated extended partition. I just installed PC-BSD on that partition. When ...
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0answers
50 views

Can't boot any linux live distro

So I wanted to give SubgraphOS a try and noticed I couldn't boot it. So I tried Tails but that one doesn't work either. Neither does Kali linux. Each of these boots into the grub bootloader, which ...
2
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1answer
171 views

Linux kernel GRUB/boot issue?

I'm working with a specific software package that is only compatible with a older linux kernel version. After installing this older version via the following command $ sudo apt-get install linux-...
2
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0answers
148 views

Mysterious 8 second delay in boot after grub

I have installed Fedora 23 (KDE spin) on an HP Prodesk mini 600 G2. There is one problem I can't quite figure out, though: after grub comes up, and I press enter on any kernel to boot, the screen goes ...
2
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1answer
608 views

grub can't find CentOS 7

My desktop was tri-booting between Ubuntu 2.04, CentOS 6, and Windows. I installed CentOS 7 in the space that CentOS 6 used, but update-grub doesn't result in the new CentOS showing up. I can only ...
2
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0answers
300 views

Minimal BASH like line editing is supported

I have Fedora 23 dual boot with Windows 10. Suddenly, I'm not able to see the normal GRUB menu to go into either Fedora or Windows. I've seen the question and answer here but I'm already stuck at ...
2
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0answers
673 views

ArchLinux: Error installing grub on encrypted lvm partition(lvm on luks)

I am trying to install Arch Linux on an encrypted partition (LVM on LUKS). I followed the relevant Arch Wiki guide, but when I do: grub-install --recheck /dev/sda it gives me this output: grub-...

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