Ubuntu :: Grub2 Isn't Loading Error "grub Rescue No Such Disk"
Apr 15, 2010
I just installed Ubuntu 10.4 beta. The installation is fine, but grub2 isn't loading Linux. Instead of booting into the OS, I get the message: No such disk grub rescue >I have two hard drives: /dev/sda and /dev/sdb. Ubuntu is the only OS and is located on /dev/sda1. I ran the "boot info" script and include the results here. One problem I see is that I have grub2 on the MDRs of both /dev/sda and /dev/sdb. BTW: From the Live CD, I can select boot into hard drive and Ubuntu will start up just fine. I can also use "Super Grub" CD and everything loads fine.
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Mar 7, 2010
When i open my computer this message is coming what can i do?
grup loading error:unknown filessystem grub rescue
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Apr 30, 2010
After upgrading to 10.04 from 9.10 Win7 wouldn't startup any more. So I tried this HowTo: [URL] to restore Grub2. But now each time I boot up I get this two lines: error file not found grub rescue> I have NO idea what to do.
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Mar 9, 2010
i get this error when i try to boot from harddrive:
grub loading error: no such disk grub rescue>_
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Dec 11, 2010
Trying to do a new install of ubuntu 10.10 to my laptop. Installation and all works fine, but upon rebooting, after the bios screen i get:
Code:
error: out of disk.
grub rescue>
I tried using following some instructions i found after googling for the problem:
Code:
ls (displays the partitions and devices Grub can see)
set prefix=(hdX,Y)/boot/grub
[Code]...
but after the 5th step, i get another "error: out of disk" message. The odd thing is that I had an install of 10.10 on this laptop a month ago, and it worked fine. As a side note, I installed fedora 14 after this happened, which worked fine. Reinstalled ubuntu, and it was back to the same problem. I also tried installing with a kubuntu cd I had, to make sure it wasnt the install media, and had the same problem.
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Feb 9, 2010
I know nothing about this at all. I have never programmed a computer.. I loaned my tower to a friend who put this on ...now i have it back and cant get to my windows 98. all i get each time i boot is ...
GRUB loading ... error:no such disk grub recover>
I have tried ubuntu sec 8.4 recover mode and all i get is unreconized command.. i do not know how to set anything.. i have no disks for this not even the orginal windows recover disk.. is their anything i can do to get win to run as it use to??
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Feb 11, 2010
I am fresh to Ubuntu and am having trouble getting it to boot on my system. I normally run XP, but recently added a second internal hard drive and installed Ubuntu on it. The installation went fine and upon initial reboot I received -
GRUB loading. error: no such disk grub rescue>
I am wondering if there is an issue between two different operating systems upon boot. I am not familiar with GRUB commands.
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Jul 13, 2011
Downloaded Ubuntu 10.04.1 Desktop AMD64, tried to install it to a cleand HDD using the whole HDD, i.e. gave it permission to use the whole HDD. Installation process appeared to run OK but when it came to the restart it just fired up the message
error: out of disk
grub rescue>
I've searched this forum and found numerous references to these error messages but cannot make head nor tail of the diagnostic suggestions. Apart from anything else they suggest strings of command lines which I don't understand and can't enter anyway since they don't correspond to my keyboard layout (if I hit > or ) something completely different appears on the screen). Is there someone here who can provide a step-by-step solution in lay language ? Or is there such a thing as a bootable file which can be downloaded and inserted into my CD drive to correct this problem ?
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May 3, 2010
I have a dual boot system with Windows 7 and Ubuntu 9.10. I booted into Ubuntu and started the process to upgrade to Ubuntu 10.04. When it was all finished, it restarted and attempted to boot into the GRUB load screen. However, I get this message:
GRUB loading.
error: no such disck
grub rescue>
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May 11, 2011
error: unknown filesystem grub rescue>
Background: My mother's HP laptop had Ubuntu and Vista on it, Ubuntu my brother's doing. He decided he wanted to take off Ubuntu yesterday (he had forgotten the password), and deleted the partition that it was contained within. The computer now boots to this error.
Inventory: We no longer have the install disk for Windows Vista, he cannot tell me what version he used of Ubuntu, what partition it was on, any of the specs for the machine, or generally any information about the system. All I am aware of is that error on the boot-up screen. I have nothing else to work with.
I would like to remove Grub, and Ubuntu, and leave Windows intact (the request of the owner of the computer), but I have no idea what commands I could use to get rid of either when I can't access Windows, or how to properly remove them if I did access Windows.
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Jan 31, 2010
Yesterday I partitioned my hard drive with kubuntu netbook remix and windows 7. after a few hours and reboots i turned on my computer and it said Grub loading. unknown filesystem rescue grub> It looks like allot of people have been having similar errors recently with windows 7.
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Oct 24, 2010
i am a newbie to linux and i am stuck at the GRUB rescue prompt at the startup.i have dual boot windows and Ubntu 10.04.I want to remove GRUB2 from Harddrive itself.can u suggest ant command on GRUUB recue prompt ?
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May 23, 2010
When I try and boot my Debian computer I get the messages: Grub Loading stage1.5. Grub loading, please wait... Error 15 Is there any way of recovering from this - or is it simply a fresh install? I was attempting an upgrade from Lenny to Squeeze and despite a few hurdles it looked like it was all happening. Got the new kernel loading, and the new grub. It looked as though grub2 was working so I ran the grub-remove-legacy-support command (something like that) and now my computer won't boot grub or Linux.
I'm assuming the MBR on my harddrive is lost, however I don't know what state the partition is in. I'm guessing that maybe this has been lost as well. I tried a few tools from the Ultimate Boot CD but nothing here was able to re-install my grub or boot from any partition or even mount my file-system. I'm fearing the worst but would like it confirmed before I blow it all away with a new install.
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Feb 8, 2010
I've tried to be clever but as usual I didn't think before acting and missed a small detail.
I have recently installed karmic (dual booting with Vista) on my dell xps laptop. The install went fine, I'm very happy with my new OS.
I bought a new Seagate 500GB portable external HDD. I got a bit over-excited and installed karmic on the external drive. This worked fine and I got a lovely (but slow to appear) Grub2 menu showing my vista and both ubuntu options.
My problem is that now, when I unplug the external drive, Grub fails and I get a grub rescue> prompt. So I need the external drive to be plugged in if I want to boot.
It seems I have done something to the grub configuration. I have read around the subject but I am not confident about how best to proceed.
I understand there is an 'advanced' option in the installer which will allow me to choose where to install grub. Presumably I want it on the internal drive so that I can boot without the external one plugged in.
Am I right in thinking I can just pop in my install disk and redo the installation?
If I indicate I want to install Grub on the internal drive, which partition should I aim for?
Will I get a grub option for booting to the external drive?
Will I be able to plug the external drive into a different machine and boot from it?
I haven't done anything with the fresh install on the external drive so I don't mind losing that.
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Dec 16, 2010
I updated yesterday and now when I start my laptop it goes in to grub rescue mode. I have booted from a 'live cd' and thought I could repair grub from there. In gparted however the partition with ubuntu (sda1) is seen as unknown file system, in terminal when I list the partition table it shows up as FAT16 type. When I try a grub-install it gives this error message:
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Jun 15, 2011
I use openSuSE and want to try Ubuntu.This is the layout of the partitions:
Code:
sda1 /boot (SuSE)
...
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Jul 8, 2011
I am new to Linux. I have installed RHEL 5.4 on my PC with preloaded Windows XP.
Windows was set as the first boot kernel. So if i do not choose which OS to be loaded it will load Windows by Default.
Today I got an error saying GRub Loading Stage2 read error.
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Feb 20, 2010
I accidently deleted my ubuntu partition, and when boot I get this message:GRUB loading.error:unknown filesystemgrub rescue>I can't get into my bios options either... I just see the MSI splash screen and it cuts right to this error message.
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Sep 19, 2014
I am running a 14 disk RAID 6 on mdadm behind 2 LSI SAS2008's in JBOD mode (no HW raid) on Debian 7 in BIOS legacy mode.
Grub2 is dropping to a rescue shell complaining that "no such device" exists for "mduuid/b1c40379914e5d18dddb893b4dc5a28f".
Output from mdadm:
Code: Select all # mdadm -D /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Wed Nov 7 17:06:02 2012
Raid Level : raid6
Array Size : 35160446976 (33531.62 GiB 36004.30 GB)
Used Dev Size : 2930037248 (2794.30 GiB 3000.36 GB)
Raid Devices : 14
[Code] ....
Output from blkid:
Code: Select all # blkid
/dev/md0: UUID="2c61b08d-cb1f-4c2c-8ce0-eaea15af32fb" TYPE="xfs"
/dev/md/0: UUID="2c61b08d-cb1f-4c2c-8ce0-eaea15af32fb" TYPE="xfs"
/dev/sdd2: UUID="b1c40379-914e-5d18-dddb-893b4dc5a28f" UUID_SUB="09a00673-c9c1-dc15-b792-f0226016a8a6" LABEL="media:0" TYPE="linux_raid_member"
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The UUID for md0 is `2c61b08d-cb1f-4c2c-8ce0-eaea15af32fb` so I do not understand why grub insists on looking for `b1c40379914e5d18dddb893b4dc5a28f`.
**Here is the output from `bootinfoscript` 0.61. This contains alot of detailed information, and I couldn't find anything wrong with any of it: [URL] .....
During the grub rescue an `ls` shows the member disks and also shows `(md/0)` but if I try an `ls (md/0)` I get an unknown disk error. Trying an `ls` on any member device results in unknown filesystem. The filesystem on the md0 is XFS, and I assume the unknown filesystem is normal if its trying to read an individual disk instead of md0.
I have come close to losing my mind over this, I've tried uninstalling and reinstalling grub numerous times, `update-initramfs -u -k all` numerous times, `update-grub` numerous times, `grub-install` numerous times to all member disks without error, etc.
I even tried manually editing `grub.cfg` to replace all instances of `mduuid/b1c40379914e5d18dddb893b4dc5a28f` with `(md/0)` and then re-install grub, but the exact same error of no such device mduuid/b1c40379914e5d18dddb893b4dc5a28f still happened.
[URL] ....
One thing I noticed is it is only showing half the disks. I am not sure if this matters or is important or not, but one theory would be because there are two LSI cards physically in the machine.
This last screenshot was shown after I specifically altered grub.cfg to replace all instances of `mduuid/b1c40379914e5d18dddb893b4dc5a28f` with `mduuid/2c61b08d-cb1f-4c2c-8ce0-eaea15af32fb` and then re-ran grub-install on all member drives. Where it is getting this old b1c* address I have no clue.
I even tried installing a SATA drive on /dev/sda, outside of the array, and installing grub on it and booting from it. Still, same identical error.
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May 21, 2011
Ubuntu 9.10 was set up to handle the booting selection - previously I thought it was xp but Ubuntu 9.10 "did" it. The system started out as a xp / ubuntu 9.10 dual boot on a 400gb drive. xp has 210gb, ub has 80 and their is a 100gb shared storage. Xp was installed first and then I followed a guide over at linuxconfig.org to get ub installed so that I could select which OS was wanted at boot. Ubuntu manages the boot up menu (Went back to look at my notes from the original setup) The owner tried to update to ub 11.04 and afterall was said and done the machine now boots to the message
error file not found grub rescue I can't say if 11.04 was properly installed or not. Ask whatever you like and I'll give the best answer I can. I think the xp install is okay but I can't say for certain as I don't know how to boot it outside the bootmanager at startup. Data has been saved so if I have to blow it all away and start over I can but I'm hoping I won't have to.
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Oct 24, 2010
I have a long running 9.10 installation. All of a sudden, on boot, I get this error: "loading initial ramdisk error: file not found" If I hit 'E' at the menu entry, I can scroll all the way to the end of the boot command, and it appears that the last 'c' on 'generic' is missing from the kernel name. If I add the c and hit ctrl-x it boots fine. The grub.cfg appears to be correct, it has the full generic spelled out.
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Sep 28, 2010
I know this is a common error, but my situation is a little different than previous threads on this issue and I just want to make sure I get the correct solution.
Basically, I had Ubuntu 10.04 and Windows 7 on my netbook and wanted to try a more lightweight version of Ubuntu. After settling on LXDE for a desktop, I decided to install Lubuntu 10.04. I chose not to install LXDE over regular Ubuntu because I wanted to eventually end up with an Ubuntu distro with either GNOME or LXDE, but not both. So rather than put myself through the hassle of uninstalling all the GNOME or LXDE packages, I decided to keep them each on separate partitions.
In the end I decided to just stick with regular Ubuntu and deleted the Lubuntu partitions. Now I get the GRUB error written in the title of this thread.
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Nov 29, 2010
I have recently decided to try out Ubuntu(Lucid Lynx) using wubi. Everything was absolutely superb and realizing that I have a lot to learn and looking forward to it. Everything was fine until I updated and ticked 2 boxes for updating grub and restarted and couldn't boot into anything. I have xp on 80gb 2.6 celeron, and Ubuntu loaded through wubi on 320 gb external hard drive.
error: no such device??????????????????
grub rescue>
It may seem a little slow for me to put to the test your responses, because I will have to disconnect the PC that I am using and use those connections on the 2.6. This one I am using at the moment is 400hz p3.
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Mar 11, 2011
i am getting this error at startup
grub rescue:
i have an live cd and i have tried all the methods and i am just going in circles.i am not getting any proper or definite answer.i can just open my C drive from kubuntu and im getting hundreds of errors in konsole like permission denied or bad superblock etc....
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May 20, 2011
I recently plugged the hard drive from my parents' old computer into my computer's motherboard to copy some files (it's an IDE drive if that makes a difference). I copied all the old family photos and whatnot into a folder on my Vista 64bit desktop which runs off of my computer's main hard drive. I shut the computer down and unplugged the old IDE drive and tried to start it up again. After going through the typical start up screens it gets stuck on a black screen that says:"error: no such device: 66727dd9 (morenumbers).e3cbf9f71233grub rescue>_"the cursor is blinking where the underscore is. Typically, it would go to the screen where I choose whether I want to run ubuntu 10.10 or vista.I went into boot preferences and everything looks okay.. I tried plugging the hard drive into different ports on the mobo and still nothing. All my useful files are in the Vista partition of my hard drive so I'm fine with wiping everything and doing a fresh install of both vista and ubuntu so long as I can keep those files. Does anyone know what could be causing this? I've never heard of "grub rescue"
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Jul 8, 2011
So, I had Ubuntu and Mint on my second hard drive (first drive has 7), and I reinstalled Ubuntu over the entire thing (upgraded from 10.04). Ubuntu now has one drive to itself, while Windows has the other. When I did this, I booted into Grub Rescue. Restarted and switched hard drives, same thing. I loaded the LiveCD and followed this repair guide. I discovered I don't have a Boot.cfg (or .lst) or another file of the three required. I noticed my install did not have any /boot partition, so I reinstalled a few times, all with the same error. Finally, I go back to the LiveCD desktop and run the following: sudo grub-install --boot-directory=/media/[long string]/boot /dev/sda And this is the output: Code: /usr/sbin/grub-probe: error: cannot stat: /dev/sda/ This is on Ubuntu 11.04 with GRUB2 (1.99).
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May 3, 2010
My Server runs "fine", then I type init 6 for rebooting or some cron job initiates Init 6 and my system stops in grub at: GRUB loading stage1.5. Error 18 After another Ctrl+Alt+Del the system boots as if anything happened. this is why I doubt that it's an issue of too big HDD or BIOS.
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Feb 7, 2010
I have been using ubuntu 9.10 for a month. i have it installed on a 5GB separate partition of a 80 GB hard disk with my XP installed on a C drive(a separate partition ofcourse) then i had to remove it from my PC so i boot my PC with a partition manager cd and directly formatted that partition of 5GB from that software now i am having this error on my boot of PC....
grub rescue> error:unknown filesystem
I have tried a lot of commands here on this screen and nothing happens...i want to go to my XP .... and can't loose my XP OS and other data as well on different partitions.....
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Mar 21, 2010
I have tried to upgrade to 10.4 LTS it crashed I use dual booting whenever I try to start the computer it goes in to grub rescue > I have used wubi to install the dul booting, now I can not get into my window nor ubuntu. what can I do ?
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Jul 8, 2010
then my computer starts black window opens error: no such partition grub rescue>
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