Questions tagged [grubrescue]

Questions about using the grub rescue prompt or how to get rid of it.

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grub installation

When installing the latest Ubuntu LTS (Jammy Jellyfish), near the end of the installation I get the error message "Executing 'grub-install/dev/sdb' failed. This is a fatal error." I get ...
0 votes
3 answers
3k views

grub2 not looking for config file in /boot/grub/grub.cfg

When I try to boot, it goes into grub command line (repair mode). If use the configfile command to point to the config file, the system immediately boots with no problem. SO it seems clear that grub ...
1 vote
1 answer
4k views

grub rescue, blind mode

i updated osx last night and when i try to boot to linux, i get sent to the grub rescue prompt. i have performed the following steps: set prefix=(hd1,gpt5)/boot/grub (contains grub.cfg but mod ...
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0 answers
20 views

I tried to install Ubuntu and it broke

I tried installing Ubuntu with Windows for a dual boot. I installed Ubuntu on a seperate hard drive but it somehow replaced the windows boot loader and grub corrupted after it did.
1 vote
1 answer
8k views

error:failure reading sector 0x802 from 'hd0'

When I rebooted my Ubuntu 14.04 it gave the following error. I tried ls and it still threw the error below. Could some one give me an exact answer on how to solve this issue? I need this help a bit ...
0 votes
0 answers
69 views

While booting it shows error: file '/boot/grub/i386-pc/normal.mod' not found. Entering rescue mode... How to tackle this problem?

I'll be honest I'm a noob in coding and all such things related to it. Please be as specific as possible My device is a 64-bit device and I've never encrypted anything as such.
0 votes
2 answers
5k views

MBR accidentally deleted , how to restore partition

I know that my question can be a duplicate, but i spent a lot of time with google and askubuntu, but couldnt find answer. I installed Ubuntu 13.10 alongside Windows 7 (i had C drive of 100GB and D ...
2 votes
2 answers
8k views

Unknown Filesystem - grub rescue after Windows 10 update?

About a week ago Windows 10 ran its automatic updates and after that I'm unable to boot to ubuntu the way I was doing it (pressing f12 and manually selecting Ubuntu partition). Now it takes me to a ...
2 votes
1 answer
5k views

initramfs prompt "mount: can't read etc/fstab" after grub rescue

I had a bootable USB key witk ubuntustudio with two partitions: /dev/sdb1 with Ubuntu and a fat32 /dev/sdb2. Then I realized that Windows only reads partitions if they are the first. So I moved ...
6 votes
1 answer
13k views

Insmod error in grub: symbol not found:grub_realidt

I have a dual boot PC with Windows 7 and Ubuntu. I upgraded from 12.04 to 12.10 and then to 13.04 and since then I have not been able to boot because the PC goes into grub rescue with the error "File ...
1 vote
2 answers
11k views

How do I use GRUB rescue?

So when I was starting my computer, I pressed F8 and then it said there was no such partition and now it only shows GRUB rescue. How do I fix GRUB to run normally again?
3 votes
3 answers
7k views

grub rescue at every boot

I had a dual boot installation (Win8 & Ubuntu). I was not using Windows much and decided to have Ubuntu for the whole system. When I reinstalled Ubuntu, I got the error error: no such partition ...
1 vote
2 answers
10k views

Grub: attempt to read or write outside of disk 'hd0'

We have a Dell PowerEdge R730xd with 24 SSDs of 500GB each. We need to install Ubuntu 14.04 LTS on this machine, and use it as a database (postgresql). Our RAID controller is an Avago MEGARAID, and ...
2 votes
1 answer
181 views

When I fresh install Ubuntu 22.04, after restart it says "Attempt to read or write outside of disk 'hd0'"

I am install Xubuntu 22.04 on a machine that was just running Kubuntu 18.04 (or maybe 22.04). It worked well. I then removed the old HD and installed a brand new one. I ran then Xubuntu installer and ...
0 votes
1 answer
180 views

Minimal BASH-like on LUKS-encrypted install after format of secondary SSD

I can't load ubuntu after I formatted the old SSD I used to have Windows on and that I thought had nothing to do with Ubuntu's boot. The Ubuntu partition is LUKS encrypted and in GRUB I am able to ...
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144 views

Problems booting Ubuntu USB

I have a (with Ubuntu,) bootable USB. But, if I boot to it, its automaticly boot to GRUB with no errors. It says; Loading GRUB... Welcome To GRUB! Entering rescue mode... grub rescue> I`m created ...
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0 answers
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I am stuck on grub rescue! I can't even execute the insmod command. An error says "error: attempt to read or write outside of disk 'hd0'

Can anybody provided me some help right now I'm not quite knowledgeable on grub commands so can some help me restore Ubuntu. I was just using the terminal and opened software update app. And the next ...
0 votes
1 answer
1k views

ubuntu 14.04 error "attempt to read outside of disk 'hd0'"

I followed the top post off of this question What to do when I get an "attempt to read or write outside of disk 'hd0'" error and Boot Repair does not solve the problem? . After ...
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0 answers
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How can I use DriveDroid to install Ubuntu on a dead PC?

My laptop is stuck in GRUB rescue mode. I tried: set boot=(hd0,msdos1) set prefix=(hd0,msdos1)/boot/grub and anything else I found on the internet, but everything lead to unknown system file or no ...
2 votes
3 answers
884 views

Newbie Ubuntu 22.04.2 on thumb drive "symbol 'grub_file_filters' not found"

Linux noob here, although I do have some experience with BSD Unix. I downloaded and created a bootable USB drive from "ubuntu-22.04.2-desktop-amd64.iso" using Rufus. When I boot my laptop ...
0 votes
1 answer
53 views

Deleted partitions - grub rescue

I have deleted accidentally all disks partitions in the laptop, and now I cannot start ubuntu neither start installation from usb. After turning on laptop I get error: no such partition. Entering ...
2 votes
2 answers
13k views

"Insmod normal" command returns "attempt to read or write outside of disk 'hd0'

I've got the issue shown below: error: attempt to reader write outside of disk 'hd0' Entering rescue mode... It happened in the past, so I tried grub rescue> ls (hd0) (hd0,msdos1) grub rescue>...
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0 answers
70 views

ACPI Error: Can't reboot or enter grub

I got this error after updating and now I can't hard reboot with the power button nor can I enter grub. Is there a way I can shut down my laptop? MSI Z16.
15 votes
2 answers
67k views

Booting Ubuntu Failure : error: attempt to read or write outside of disk 'hd0'

I have installed Ubuntu 12.10 in a Western Digital external hard drive (320GB). This is a complete installation, not a live USB. When I plug it in my HP desktop I go to the BIOS settings and boot off ...
1 vote
0 answers
58 views

Rescue help needed - Linux box no longer boots Ubuntu 20.04 and finds and old Linux Mint 17.2 (after recent updates)

I went out of town for a long weekend, shutting down the Linux box as a precaution for potential thunderstorms. When I returned, my Linux box seems to have lost track of it's grub references to Ubuntu ...
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0 answers
91 views

error: attempt to read or write outside of disk 'hd0'. Error: you need to load the kernel first

I have a Sony laptop and I had installed Ubuntu 1-2 months before. Suddenly when I opened my laptop, there is an error regarding grub rescue that says: error: attempt to read or write outside of disk '...
1 vote
0 answers
693 views

error: symbol 'grub_is_lockdown' not found while installing ubuntu-20.04.4 from USB ISO

Hello Ubuntu Community, I have been trying to install ubuntu-20.04.4 for our tower (V100) booting from USB. Unfortunately, getting the following error. error: symbol 'grub_is_lockdown' not found. ...
1 vote
0 answers
293 views

Grub rescue does not open the boot folder

I recently installed Linux Ubuntu 22.04 on an external SSD (through a USB memory, with Rufus) When start I find this: error: file '/boot/grub/i386-pc/normal.mod' not found Entering rescue mode grub ...
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0 answers
170 views

Unable to boot into ubuntu 18.04, Boot Repair utility says No known boot loader is installed

I have ubuntu 18.04 installed on a system(single os, no dual boot) which refused to boot after I had to do a hard restart and sent me to the grub_rescue prompt. ls on grub_rescue prompt lists (hd0) (...
4 votes
3 answers
53k views

How to exit grub rescue?

I want to delete the swap partition to free up space to increase the root partition, but accidentally when I restarted Ubuntu I got this: I have made a live Ubuntu to solve this, but I can't close ...
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0 answers
1k views

Grub rescue (ubuntu) after booting from usb / grub_disk_native_sectors not found

After starting to boot from a memory stick to install Ubuntu (even if i didn't erase the ubuntu 18 and Windows 10 from laptop), i tryed to repaire a problem when i upgrade Ubuntu from 18 version to 22,...
2 votes
1 answer
18k views

error: file '/grub/i386-pc/normal.mod' not found ans filesystem unknown, Ubuntu 18.10

I run in a lot of trouble with my laptop. I am using an Lenovo Thinkpad Yoga and run in a lot of trouble after trying to install an Ubuntu/Windows 10 Dual Boot. I had an working Ubuntu installation ...
1 vote
1 answer
36k views

error: failure reading sector 0x802 from 'hd0'. Entering rescue mode grub rescue>

Disks: SMART Data & Self-Tests: Results of sudo fdisk -l : I was using Ubuntu 16.04, suddenly this grub rescue came on the screen. When I do error: failure reading sector 0x802 from 'hd0'. ...
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0 answers
20 views

At grub rescue> prompt but the keyboard is not responding although it's connected [duplicate]

I'm running Ubuntu 20 or 21. I had rebooted because stupid Firefox froze. Honestly I do not know what message was, duh did not record it. I rebooted and received a message of chassis intrusion ...
0 votes
1 answer
1k views

Windows 10 updates grub rescue

I have a grub rescue issue. On boot Windows 10 decided to update and after that the grub menu got corrupted. Now I am stuck at the grub rescue mode. My attempts to locate the grub2 on the partitions ...
1 vote
2 answers
231 views

Can I replace a laptop's hard drive with an Ubuntu hard drive?

I'm planning on getting a newer and more powerful laptop. I have so much data in my current laptop that I don't want to lose. I was thinking of replacing the newer laptop's hard drive with this ...
0 votes
0 answers
317 views

SystemRescue identifeis my NVMe drive, but Ubuntu installation doesn't

I've seen many posts on problem installing Ubuntu on NVMe drives, none helped so far. In my case: SystemRescue live cd does recognize the drive, but Ubuntu installation doesn't, so I am sure that ...
1 vote
0 answers
181 views

"Error: no such partition" after uninstalling Ubuntu

I had Ubuntu installed on dual boot with Windows 7. I decided that I liked it, but I did not want the dual boot option, so I uninstall it. Now whenever I turn on my computer, it skips BIOS and goes ...
0 votes
0 answers
137 views

Cloning an Ubuntu 22.04 instance that uses a compact flash drive seems to lead to an empty /boot/grub directory

We have an Ubuntu 22.04 setup that runs and works fine. When we clone the compact flash drive and put into an identical system it fails to boot with a file '/grub/i386-pc/normal.mod' not found error ...
0 votes
0 answers
126 views

Ubuntu 22.04 LTS dual boot with Windows 10 goes to Grub2 Rescue when reinserting old drive with both OS's

My system is old and bios only. However, I created a dual-boot setup on SSD for Ubuntu 22.04 LTS and Windows 10 in GPT format. Yes, I got it to work. Everything worked fine until I plugged the old HDD ...
1 vote
2 answers
4k views

Problem upon restarting Ubuntu: grub rescue

I am new to Ubuntu. I was restarting the system and got the following message: error: file '/boot/grub/i386-pc/extcmd.mod' not found. Entering rescue mode... grub rescue>' What do I do?
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0 answers
111 views

'attempt to read or write outside of disk 'hd0' ’after the power cut

My machine is Dell PowerEdge730, Ubuntu 20.04. The power is out. I try to reboot it after power return. The grub interface appears first. In the past, I always reboot the computer with these commands ...
0 votes
1 answer
1k views

Can't install Ubuntu 22.04 LTS / grub failure

trying to install 22.04 LTS onto my laptop (ThinkPad P50). I've had a working dual-boot W10+20.04 for a few years. When I set that up, though, I made a bad decision and only gave 70GB of the drive to ...
1 vote
2 answers
4k views

grub rescue after creating new partition from windows

I'd successfully installed Ubuntu 10.04.03 LTS with parallel to existing Window 7 Professional. Both the OSes were booting properly without any problem. After install I needed to do sudo update-grub ...
10 votes
2 answers
40k views

GRUB Rescue - setting boot and prefix again and again

I almost know nothing about coding in Ubuntu. I am currently dual booting ubuntu 16.04 LTS and Windows 10. Everything was fine . But today an error occured saying "can't find filesystem" and then ...
37 votes
11 answers
88k views

grub_file_filters not found after Ubuntu 19.10 upgrade

I upgraded Ubuntu from 19.04 to 19.10. The upgrade went without errors but after restart grub throws an error on startup and goes into rescu mode error: symbol 'grub_file_filters' not found. ...
1 vote
0 answers
379 views

Error: file ‘/boot/grub/i386-pc/normal.mod” not found while installing ubuntu

I’m trying to install Ubuntu on an external ssd but every time I boot from the USB it suddenly loads grub rescue showing the error file ‘/boot/grub/i386-pc/normal.mod” not found I searched a lot and ...
0 votes
1 answer
251 views

Ubuntu single boot unknown filesystem error (Not Duplicate)

I have a Samsung 860 EVO 500 GB SSD that is just running a single boot Ubuntu 20.04 LTS Desktop. First off I have tried Grub rescue - error: unknown filesystem and I can't get past the ls portion of ...
0 votes
0 answers
122 views

repair both Ubuntu and grub in dual boot system

I use a PC with SSD (240GB) and 2 HDDs (2TB and 500GB). I have Ubuntu 22.04.1 and Win10 installed in the SSD, and use the HDD for data. Recently, after one of the usual Ubuntu updates, Ubuntu stopped ...
1 vote
2 answers
1k views

Set default grub partition

Every time I boot into Ubuntu (not dual boot, only have one OS installed) it boots me into the GRUB rescue prompt. I fix it every time with the same commands: set root=(hd0,msdos5) set prefix=(hd0,...

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