Questions tagged [grub]

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

551 questions with no upvoted or accepted answers
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votes
1answer
21k 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 ...
5
votes
0answers
4k views

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 ...
4
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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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0answers
300 views

Grub.conf vs sysctl.conf

Both files are being used to pass parameters to the kernel. so what exacly is the difference between the two? What is the purpose of each file?
4
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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 ...
4
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0answers
745 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
votes
1answer
758 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 ...
3
votes
0answers
621 views

Modifying login for an encrypted boot partition (GRUB)

I followed an tutorial on the archlinux wiki for an encrypted boot partition and I have some questions. Up to now everything is working (two partitions: efi + encrypted lvm), and when booting I come ...
3
votes
0answers
663 views

How to boot 32-bit Linux kernel on 64-bit UEFI system without CSM

I have a system on which I have to run a 32-bit Linux kernel, as it needs to interact with obsolete hardware which only have a 32-bit driver available. Changing the driver is not feasible. The Dell ...
3
votes
0answers
1k views

Fail to boot: mounting `/boot/efi` raises “IO charset iso8859-1 not found”

I was using Ubuntu 19.04 for some time and wanted to try the recently released Pop!_OS 19.10. I want to keep using GRUB, but Pop!_OS (or maybe I did it while trying to repair) mangled my bootloader, ...
3
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0answers
69 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 ...
3
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0answers
190 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 ...
3
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0answers
4k 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
votes
1answer
3k 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 ...
3
votes
0answers
60 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 ...
3
votes
0answers
691 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/...
3
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0answers
306 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
votes
2answers
2k 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 ...
3
votes
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 ...
3
votes
0answers
726 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. ...
3
votes
0answers
869 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 ...
3
votes
1answer
8k views

error: cant't find command linux when booting system

Recently I've installed CentOS 7 on my pc, previously I had debian 7 and manjaro installed. When I installed manjaro I overwrote the bootloader of debian and manjaro's grub recognized the two systems ...
3
votes
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 ...
3
votes
0answers
119 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/...
3
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0answers
454 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
votes
1answer
931 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
76 views

GRUB alternative for LUKS2 with Argon2ID support

It seems that the even the most recent version of GRUB2 doesn't support LUKS2 with the PBKDF Argon2ID (source). The Raspberry Pi bootloader for instance fully supports this new hashing function. Is ...
2
votes
2answers
65 views

Removed /etc folder how do I keep my data after booting

I accidently removed the whole /etc folder (rm -f /etc) please don't ask why I was in a rush. Then I panicked and restarted my computer. Now all I have is GRUB. Is there a way to recover my data? I'm ...
2
votes
0answers
36 views

After inserting m2 ssd only grub is starting but not Linux (Ubuntu)

I have Ubuntu(20.xx) on a 250gb ssd and MS-Windows on another 250gb ssd. As soon as I insert a 1tb m2 ssd in the motherboard (which had previously ubuntu 18.xx installed), ubuntu would not start, only ...
2
votes
0answers
80 views

Cannot boot from grub / initramfs to desktop in linux mint

Recently I had to download some files for my uni coursework on Docker. I think they were temporarily installed on /var/ and I had to create some syslinks to enable me to have the space to install it. ...
2
votes
0answers
225 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=...
2
votes
0answers
1k 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 ...
2
votes
0answers
481 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 ...
2
votes
1answer
16k views

Add Prime OS (Android_x86_x64) to grub menu

I have debian dual boot with windows and try to install prime os also, while install it i didn't install it's grub because i have debian grub, but after installation i can't found it in grub . ...
2
votes
0answers
4k 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 ...
2
votes
1answer
974 views

Debian not recognizing my ttyS0 / console redirection not working

I have a fitlet2 (https://fit-iot.com/web/products/fitlet2/) which has a serial port. I can connect to the serial port of the fitlet2 with screen from my computer (screen /dev/ttyUSB0 115200) and ...
2
votes
0answers
93 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 ...
2
votes
0answers
79 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 ...
2
votes
0answers
327 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
votes
0answers
751 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 ...
2
votes
0answers
753 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 ...
2
votes
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 ...
2
votes
0answers
1k 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
votes
0answers
545 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
votes
1answer
927 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
votes
1answer
9k 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:...
2
votes
0answers
983 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/...
2
votes
0answers
31 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
votes
1answer
2k views

Dual boot - Installed arch and windows entry disappeared on grub

I've installed Arch on a partition, and installed grup as the wiki says grub-install /dev/sda grub-mkconfig -o /boot/grub/grub.cfg Now I only get Archlinux and Advanced options and no Windows. ...
2
votes
0answers
231 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 ...

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