GRUB Rescue | Repairing GRUB
ฝัง
- เผยแพร่เมื่อ 29 ก.ย. 2024
- In this video, I go over 2 methods of recovering grub when your Linux distribution won't boot.
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"Only takes 30 seconds to a minute..." I'm on day two...
Excellent!, the first method worked for me just fine =D, thanks for share.
"Lets do something dumb and really mess up and delete the entire Grub folder" - Manjaro and Windows wouldn't do anything like this 😂🤣. This is partly why I moved away from Manjaro as invariably every 6 months I'd be rebuilding Grub.
But it's nice to know a few ways to fix it
Hi, I installed Rocky Linux 8.5 on VMware after installation I am not able to boot into the OS as when I select the kernel from the grub menu I get a kernel panic error it reads "Kernel panic - not syncing: Fatal exception" it also does not boot into the rescue in the grub menu. I used an iso to boot into the rescue mode & tried to fix/repair the initramfs file using Dracut but that did not fix the issue. I tried the above steps you showed but in my case tab completion does not work properly sometimes it works & sometimes it does not. It's something related to vmlinuz which is causing it but I am not sure what to do or configure in the grub to fix it. can you kindly help.
I don't think its an issue with the initramfs because one of my colleagues had fixed this issue using the grub rescue/CLI by passing some parameters like you did
damn bro, i have watched so many videos, but ty so much for help me
Hey chris i have got the issues with kali linux, i am new to kali and a day ago i installed it and the problem that i have got is i cant login to kali when i am in a normal mode or advance mode, to login into kali always i have to use recovery mode . so, if their is any solutions to fix it please let me know
It's saying sda 1 not found
Tip :: Every Linux user, especially new users should keep a live usb with them.
True words ❤️...I have done many times this
not only new users tbh everyone needs to hv one
I keep 6😂
I got that lesson today
@@deezz244 lol
For those with UEFI system:
also have to mount the efi, in my case I did:
mount /dev/sda3 /mnt
mount /dev/sda1 /mnt/boot/efi (if you don't have the folder, create one)
arch-chroot /mnt
...
if your command grub-mkconfig does not found a linux kernel img (my case):
mkinitcpio -p linux (should create one, if still don't find it, update your packages: pacman -Syyu
grub-install --target=x86_64-efi --efi-directory=/boot/efi
grub-mkconfig -o /boot/grub/grub.cfg
reboot and good luck.
6:12 notice the excitement when he is about to mess up the grub real bad
Bro 4:07
In mine it says
Unknown command 'linux'
@@samratpandey5131 Are you in Rescue? If not try replacing the command with "load"
😮
update-grub is available on Manjaro by default, too.
After your explanation, it becomes so easy, it was a nightmare to me.
Man, that was an awesome video on restoring Grub. You sure make stuff look easy. Will definitely want to keep this video bookmarked for future reference.
Im stuck on linux /boot/linuz-linux root=/dev/sda1 it says file not found someone help
4:17 I got error: file '/boot/vmlinuz-linux' not found
Help quickly plz!
You got an asnwer?
to know what disk you have just type,
#sudo fdisk -l
if you are using a hardware raid it will be something like
"md126p" or similar
For Raid0, you need to reload
#GRUB_PRELOAD_MODULES="... mdraid09 mdraid1x"
UEFI
#grub-install --target=x86_64-efi --efi-directory=esp --bootloader-id=GRUB
*the UEFI portion need to be in fat file format.
Recommended
when shutting down, will make the system power off faster
#sudo umount -a
All this information can be found here, you should read it.
wiki.archlinux.org/index.php/GRUB
well it always help to have some visual conformation also =P
thx Chris ^^
Doesn't work :(
error: '/boot/vmlinuz-linux' not found.
Same here. Did you fix yours?!
@@ahmadshorsh7994 Yeah, found out I probably hadn't installed the Linux kernel or something, fixed it with pacman -S linux linux-firmware. For Arch that is, for others I don't know.
However it didn't fix the problem completely since I had another error after that as well, can't remember what it was or how I fixed it.
Jonas f thank you so much 🙏
thank god someone who isnt having a harsh indian accent
I agree but they speak 8 to 15 languages, if you try to speak their language you will sound even harsher.
@@ksl927 damn this was a bad comment i left 2 years ago, how times have changed
How do you do this on Debian with a separate boot partition,though?
after seeing this video, this is why nobody should ever do something dumb reckless mistake like drink and root so don't do it lol
don't root while tired either... I have cost myself a late night trip to the NOC while I was trying to clean up some old stuff and went one directory too high in the tree...
Absolute non-sense... Breaking things is way more fun than fixing them.
@@ChrisTitusTech XD
ah yes, I know some of these words. i'll just keep spammin f12 lol
I need to destroy my Grub now just to use this very useful information. Thanks :)
Actually, I managed to fix mine from grub rescue.
First as you did you need to find which msdos contains your OS.
ls (hd0,msdos6)\ for example, if it shows your root file directory then that's the one.
set boot=(hd0,msdos6)
set prefix=(hd0,msdos6)/boot/grub
insmod normal
normal
Then you are back on grub, boot to linux and run from the terminal
update-grub
grub-install /dev/sda
Edit: i keep mixing up update-grub
You saved my life bro
At 4.15 you say you'll tell us how to figure out which drive to enter sda1 sda2 etc - soooo is there going to be a follow up video for that?
If you found out the answer to this, could you please share a link or something with me? I need to figure out which one, but im stuck figuring out how.
Great video. I had to do this awhile back to my server. Thanks!
Questions.
When big brother Microsoft overwrites the bootloader with their bootloader (allegedly that happens occasionally with W10 after an update when you dual boot from the same SSD), what is the best way to fix Grub then? You don't get that Grub recovery tool when that happens. Could you boot up with a live-USB and then install the bootloader again?
I once bricked my Linux system by installing certain AMD proprietary software for my graphics card which apparently is not supported by those drivers. The same question, I guess. How would you install the proper software when you access your partition via a live-USB? Reinstalling Linux (ideally with some backup-utility) is the easiest solution but that isn't fun. ;)
Great Question, and yes, you use live installation media and simply do the chroot, update-grub, install-grub and done.
one thing you could try is using easyBCD from windows, and just use the MS bootloader to boot your linux partition. Not quite as nice as just grub, but it works.
@@dylanstoesz1324
Not for me. I like my nice picture, the ability to configure GRUB (timer and sequence of items) and the ability to load the distro with another kernel. If it happens to my system in the future then I will try out two SSD's with two bootloaders but then it is a bit more clumsy because you have to load the bootmenu first when you start the bootloader for Windows. Or possibly run Windows with PCIe-passthrough with the downside to have a higher power draw and the advantage of Windows not being able to take your system hostage when it updates again..
@@dylanstoesz1324 I'll have to try that again, not sure if it will work though, now you have to purchase it. My m.2 nvme seems to have complicated things, or my mb bios, even updated bios. I have to go into bios settings change things around, then it will see the grub, where ever it is now, but wont linux wont even see windows to list it in grub, spent days once trying to fix this!
You're so helpful Chris with all your videos, thank you so much for all the effort you put into them.
I need to watch this a few hundred times more so that it becomes hard-wired into my brain and I can get to do it in my sleep. Thanks. I copied and saved the notes on your website to a pdf file tucked away safely on my Google Drive ...and also backed up on my tablet. I'm ALMOST looking forward to seeing either of those two Grub errors ...ALMOST! :D
😆😆
@@mTrader1 what is your rating
@@Sakuraigi 2050
@@Sakuraigi what color is your buggati
Hi have a problem with linux /boot/vmlinuz-linux root=/dev/sda
The output error :file /boot/vmlinuz-linux
Plz any idea
I also stuck on same
File names might be different, i mean i use Ubuntu and it has different file names...
You should type ls boot/
To check files in boot dir
Or the files might be just in root dir then just type ls.
I don't know this might help
I also stucked in same
Great work CT! This is by far the farthest I've gotten with grub cl.
Question:
What about adding extra things to this boot covered in the first portion so as to add things like noacpi or things like that?
How would I type that and where?
Thanks so much for your encouragements and insights CT
In case your viewers have the same problems as me also add these commands before you chroot sudo mount -t proc proc /mnt/proc and sudo mount --rbind /dev /mnt/dev plus also sudo mount --rbind /sys /mnt/sys this will help your devices be recognized when chrooted. I always use those commands every time grub won't recognise devices within a live distro. I had the grub issue a lot when using UEFI within Virtualbox. Its ok as long as the ISO is installed once you extract it there is no grub menu. Maybe you could do a video about solutios to that. I think that is normally if I manually create the EFI partition. Great video.
I installed windows 10in a spearate partitions but it doesnt work grub boot lader is not even opening and linux boots automatically how to fix it?
How can you build a custom .iso for installing OS and apps
what partition has grub
what apps are good to have on a usb to use for a rescue USB
Damn... I went trough this hell over the weekend and took me serveral hours to figure it out and fix it... If I only had this video before... anyhow, Thanks a lot for the video mate!
THANK YOU THANK YOU THAAANK YOU!!!111 srsly, BUT.... i needed that info YESTERDAY ^^
i spent my whole day to figure out why the hell my ubuntu grub bootloader resets to the grub-recovery "shell" everytime i rebooted... the TAB "help" was not helping at all, so i just used trial&error to find out which command could help... after a few failures because i was supposed to give that specific command a file/folder or that i needed to load a kernel first, my first success came when i used the fwsetup command, which reset my pc and opened the UEFI bios, there i didn't do anything, just hit F10 and the pink ubuntu grub menu magicially appeared... BUT, when choosing the normal ubuntu boot, it froze during boot, so i tried the recovery kernel, ended up in a recovery menu. there i selected grub repair, got a msg that several files couldn't be found, they were recreated, after that i could hit resume and ubuntu would boot normally... until the next reboot ^^
at one point i just typed "exit" from the grub rescue and that saved me from going through the bios and instead the grub bootloader appeared immediately, but i still had to recover, repair, resume.... FYI: i installed the ubuntu distro on top of 2 windows 10 installations (one RTM, one skip-ahead-insider-preview) and these had no problems booting after getting to the ubuntu grub menu...
for my ubuntu i intentionally didn't use the SSD i used for my Win10 setups, but shrunk an old 2 TB HDD and formatted the unused space with ext4. mainly because i didn't want to stress my SSD with all the read/writes that i knew would happen in ubuntu (i installed bionic beaver, updated, upgraded, dist-upgraded and then did a do-release-upgrade to ubuntu cosmic, alongside with a bunch of other software packages, beginning with aptitude, then other essential stuff and after that lutris, wine, etc. because my goal was to test if i could get my favourite games (mainly Overwatch, which seems to be a troublemaker on linux) to work and how good the experience was when compared to gaming on win10.
this is btw the second time you uploaded information i did need the day before about linux problems, can't remember what it was, but omg i like your content anyway, keep going dude :*
What if I don't remember the label of my disks?
You did it easy and fast because you knew the path of your drive, how can I find that out from the GRUB console?
Great, informative video. I normally end up reinstalling or deleting my install because I don't know how to fix the problem. This video is getting book-marked!
Yes! This is probably what I need! I re-installed Windows today, unplugged all my other drives so there could be no mistake... But it overwrote NVRAM and removed my Linux. I can still see the Drive from Windows and can see the EFI partition so I know it is still there, I just need to find a way to get GRUB to put the entry back in NVRAM again.
I experieced a weird situation with ubuntu 22.04. I had my os installed in a usb stick, which already came with an efi partition, but after a system update the bootloader somehow started to use another efi partition on the cmputer ssd. Not sure these two thing are related. I set ubuntu as the first entry of uefi boot list, so when I boot my computer without ubuntu usb pluged, it loads ubuntu efi file but can't find the os, then ends up getting into grub. Solved this by copying everything under efi partition of ssd into that of the usb, then configuring it mannually with efibootmgr
En Linux Tenéis MUCHOS PROBLEMAS, Yo he Montado Debían 11.6 con KDE (No Gnome) + PLASMA 5.7 y la Carpeta EFI (Donde MONTA el GRUP de los huevos)
En la INSTALACIÓN Se fue a BUSCAR OTRA PARTICICION de FAT-32 (MS-DOS) Resulta que esta es una Tarjeta SSD FLASH . De tal Modo que Entra la BIOS y El Debían
Me Hace un ARRANQUE en VIRTUAL RAM, Es Cuestión de Tener Instalado una MEMORIA RAM de 32-GBites ¿Haber como, lo MEJORÁIS Vosotros el LINUX? Un Saludo.🐻
🐢🐬♾♾♾♾
great job including your notes. this is very helpful. hope you do this on all your great videos - thanks old tony
So I just installed linux on a hp laptop, and the install seems to have completed. However now it won't boot, and it goes strait to a menu with two options ( Linux mint 21.1 cinnamon, with linux 5.15.0-56 generic) and Linux mint 21.1 cinnamon, with linux 5.15.0-56 generic (recovery mode) if I select either it goes to loading linux 5.15.0-56 generic ... then directly under it, it says error: bad shim signature, then below that loading initial Ramdisk ....then below that error: you need to load the kernel first. what do I do? I am lost. Thank you in advance for your help.
Thanks - great vid BUT, when executing (in Ubuntu 22.04 terminal) "sudo chroot /mnt" I get the following response: "chroot: failed to run command '/bin/bash' : No such file or directory.
Any suggestions from anyone would be greatly appreciated.
I just had one of my systems boot to Grub Rescue. You could not have posted this a better time. Thank you.
Thanks! Great video. I've never been able to understand grub command line. I always use the live cd approach.
Now I switch from grub to boot directly from UEFI. It is faster and is easier to do dual boot if your BIOS have UEFI OS selector.
If I mess up UEFI variables I probably only need efibootmgr from a liveCD to restore my boot configuration.
Another unsual configuration in my boot process is having all drivers (and firmware) built-in in kernel. This allows you to avoid use initramfs image.
Avoiding initramfs speeds up disk reading from SSD or HD because you have everything you need inside the kernel.
The fastest you bring up your devices the fastest init/systemd starts. The fastest you start init/systemd the fastest you get to login prompt.
You can archive very fast boot times (3 seconds) if you do that.
for people on arch, there is a "update-grub" package in the aur if your lazy like me
and can you please explain how to use it!?
@@ALPHONSO_NANOOK install the package and you can run "sudo update-grub" on arch
@@lemler3337 Not from the live CD
@@kdbama4 well like I said, from the AUR, and since you cant use yay or makepkg as root you'll have to type it out the old fashioned way "grub-mkconfig -o /boot/grub/grub.cfg"
lemler 3 yes that’s what I ended up doing
Hi all, when I type Linu and press tab there are so many choices, and the newest one says incorrect magic number... or something like that. Any suggestions?
Does anyone know where I can find a video that explains how to fix the “unable to install grub” issue, I’ve been trying to find the answer and fix this problem for four months now, please! any help would be greatly appreciated!
Thanks I had the Grub crash all UEFI systems had and managed to fix it but I get a black screen the shows the enter decryption password. My LUKS password still works but there is no prompt what could the cause be?
I can't get into my bios , password required , never set one up , anything I can do ? Because through grub method didn't work for me .... Thanks tho ....hoping anyone can help more , thanks
My os is linux mint
set boot=(hd0,msdos3)
set prefix=(hd0,msdos3)/boot/grub
insmod normal
normal
Ok my linux starting up..
Reboot
Grub rescue again.. what? So i should type the command every boot?
if i type 'set' the display partition is (hd0,msdos2) boot and prefix, but actually this is incorrect, my system and boot and prefix actually in (hd0,msdos3) partition. What i can do this? Every boot, grub rescue again and i should type the command again too..
Sorry if my english is bad :(, i hope your answer..
okay so what if you accidentally ruined most of the system? (missing mtab and fstab, kernel images, and a bunch of other stuff)
I'm giving this a thumbs down you skip so many things I'm not even sure what's going on. I follow your steps to load ubuntu and it lead me here. My grub shows up with several hd1 gpt and ms and a memory disk and when I type the command it doesn't show what your showing.
The line after the ls root=(hd0,msdos1)
Doesn’t work what shall I do it says file /boot/vmlinuz-linux not found????
after initrd /boot/initr ,it gives me this:
error: you need to load the kernel first
P.S this is the second time it happens to me in Manjaro from bad update.
I watched this while I used Garuda's live DVD to fix Grub (I installed an old version of Ubuntu, for reasons, onto another partition and it reinstalled old Grub and didn't recognize Garuda). I feel like I should do this stuff in the video for practice...
Martin Kimberly Thomas Karen Taylor Shirley
Hey bro i have a linux distro and somehow that partition is corrupt and i wont able to load grub and wont able to access bios and bootmenu. It stucks on lenovo logo and after black screen .how to solve it
Stuck at Removing conflicting operating system Files while installing Ubuntu
How do I reset parrot os back to fresh install or like in windows as I am new and some of my frn got access to my os and messing with me ... Pls aid me
i am in this grub i got dual boot windows and linux mint. i need help. can someone help me im stuck i dont know how i find my driver but i found mine on gpt 3 but dont now were to get it
someone somewhere will stumble across this video after their first ubuntu install goes ary.
I have never had Ubuntu go South on me unless there was a hardware issue, or I screwed it up myself. I was trying to fix a video issue once and made my Ubuntu unbootable, but about 5 minutes with the Live Image and it was good to go again. To expand a little on what I mean by hardware issue, I have had drives fail, main boards fail, RAM modules fail, firmware updates needed to be compatible with newer OS installs, and even in a VMWare image I have had VMWare NIC drivers fail with a kernel update, making the network unreachable. But just Ubuntu itself failing, I haven't run into. Even if I overfill the boot partition, I have been able to fix them, it just took a little clean up.
Bro it's literally me rn
Another video that did not help. Will just reinstall on again.
I am not seeing a grub reacue it is just showing grub boot detection failed and than its a black windiw with a _ blinking..
no it didnt time to install arch for the 10th time even tho i am following the guide 1-1
you are a life save! i love you more than my girlfriend! in a very straight way tho. you are advil in a human form
I fixed my Linux mint, which was taken down by windows… now windows is not booting 😢
I can do it on every linux version? I can't install linux mint and Lubuntu after a dumb thing I did
Oh man thank you so much. Saving this video for sure since it saved me. I was very close to eiping the drive and just using it as extra storage space after linux just stopped booting. But I'm back in again. Well sort of.
For some reason it keeps doing this after rebooting but repeating the same commands at the end of the simple one to mount the kernal works fine each time without problem. But I don't want to have to keep doing those commands every time I boot my pc. And I still can't get the normal grub selection screen to show up. I have to switch to windows on a seperate drive by changing the bios boot order. Windows boots fine and normally. I have linux mint on an external ssd which is what's having issues.
Hello,
It saying that init command not found.
Can tell what I am doing wrong?
I had to check. First you said "grub-update" then later you said "update-grub." It appears to be "update-grub" which must be run with "sudo."
With dual boot i fomated the drive where ubanto was inistall .and now i ha no access to windwo
This is awesome, i spent like 4 hours trying every possible solution, and only this one worked! Thank you very much!
Not working any ... Normal
.mod not found ...i386-pc
can u make a video review about an open source antivirus *Clamav* and their is a new one just now I saw it's called *Armadito Antivirus* and these both include in GNU/Linux platform. I know that already watched the video that do you need antivirus for Linux? Right now currently it's not necessary but you never know if one day it happens so it's better to do it just incase. Also make a video about how to set up a firewall in GNU/Linux both GUI and command line interface.
Sure, I've used clamav on a NAS with SMB shares that windows machines connected to. So that is one use case for it.
How do I do the second option but on Mint?
i install garuda linux on a separate drive on windows 10 now is not booting
Umm nothing is in my partition litterly empty hdd what to do send help😐
My Linux recovery says I need to load a kernel first
Doesn't work on garuda. API error when trying to chroot.
/dev/sda1 already mounted or /mnt busy
Pls help
I seem to have an unsolvable issue no one else has. Nothing is in my (hd0, msdos1) or (hd0, msdos2) partitions. When I list the contents I get the message, "filesystem is unknown". The 3rd partition is (proc) and when I list the contents I just get "Filesystem is procfs". And the road ends there. I can not set this as the root directory.
BACKGROUND: I had a dual boot Windows 10 and Manjaro. The Windows 10 update knocked out Manjaro and I was in the midst of successfully installing from the Manjaro .iso. But I noticed that Manjaro had taken over all but some 400MB of my hard drive space (regular hard drive and not a SSD) and I only later learned about how to manually extend the Windows partition space. Bottom line: Now Windows 10 doesn't have enough space to boot and Manjaro has gone to Grub Rescue and will not recognize the .iso from the USB. I'm on a Dell Lattitude and FINE with reformatting the hard drive if I could access an OS. Any sound suggestions would be appreciated!
Waht is the method for windows .? If same case we face fo windows
this doesn't work if you have multiple harddrive installed with different OSs. If you have only one have drive with GNU/Linux distros installed in it, this will work then.
Sir please answer this.
I am using ubuntu 20.04 I tried to install some packages which includes kernel headers as well. Now I see two kernels. And I am getting this boot error. I have checked the error by pressing ESC at the booting time all services boot properly at the end I see "grub failed boot detection". Is this video can help me ? Because I have data in root directory and users directory as well. And I have GPT file system.
Mine: can’t read kernel/boot/vmlinuz
Very helpful Chris Titus Tech, thank you so much! Somehow during a LMDE install Grub got hosed and when I repaired Grub with a Live Debian USB it still booted to grub rescue. Found out in the BIOS the distros somehow got switched around.When I put the devices back in order sda, sdb and sdc and rebooted from the BIOS I had Grub again. Any idea how the /etc/default/grub got mis-configured?
I have (hd0,gpt1),(hd0,gpt2) and (hd0,gpt3) and I can't seem to find the root folder can anyone help?
"Cuz that's what most people do, they go and install grub and just don't pay attention"
You don't gotta call me out like that man.
Sir i deleted grub.cfg now am not able to boot ubuntu... As soon as i switch on i get grub loader and i exit it it goes to boot options there is i choose windows it works properly and if i choose Ubuntu again grub loader comes... Its kind of loop. Plz help me i have important documents in Ubuntu
Wish i had this video when i started to use arch
In my VMware, in Kali Linux, I did this sudo apt-get upgrade command and it was downloading . After some time the screen was off and I itried to wake but only Black Screen with a Flashing Cursor, so I shutdown it and restarted but it didn't starting. please help me out.... The host is starting but the virtual is not. Please please help anyone....
4:07
In mine it says
Unknown command 'linux'
I have: error unknown filesystem
Helo, i have some problem, ls result only shown (proc) and (hd0), i cant found ubuntu partition wich contain boot loader. Cant you help me
The boot loader on my PC got corrupted when installing Ubuntu on a second disk. I just wanted each disk to be self-contained in terms of booting. Means, when I change the boot drive in BIOS, it should boot the other disk. Of course, due to the OS auto-detection, in the Grub-menu you can still select the other installation, but when removing the one or the other disk, it should still boot. However, even if I specified the one or the other disk as a boot-loader drive, I end up not being able to boot from both disks. I don't understand what is going on. I has happened several times.
So your video was really helpful. Didn't want to follow procedures that mess with chroot etc. I understand, that no EFI or DOS partition is needed, because its all in MBR. But maybe, you could elaborate on how a good system looks like, and what partition/size should be in place to make it future-proof.
Thanks anyway.
I accidentally deleted my /boot folder for kali linux...... It is showing the same error '/boot/grub/i386-pc/normal.mod' not found. Can you help me? PLEASE ASAP
THANKS A LOT, GOD FINALLY A TUTORIAL ACTUALLY USEFUL
Ha...first again! ;-)
My god! Who is this young man? 😅
I installed Lubuntu 18.04 and it crashed on the final portion which is installing grub. I tried another distro....FreeSpire 6.0, but same issue. I reboot and get to the grub prompt. I'm not sure why the sudo update-grub is not repairing the files in my case.