I'm inexperienced in Debian. I have a dual-boot machine (64-bit, Debian 7.3, Windows 7, legacy boot) and encouter a problem at boot ever since I completed the installation of Debian 7.3 alongside the exising Windows 7. This machine has six hard drives: two are intended for ntfs storage of general data (raided together by RAID1); two more are intended for ext4 storage of general data (also raided together by RAID1); the fifth contains the Windows OS files and the sixth contains the Debian OS files. The problem is that I arrive to the grub_rescue each time at boot, seeing the message:
GRUB loading. Welcome to GRUB!
error: no such device: e081517b-3399-4067-9294-8f0686f753ca. Entering rescue mode... grub_rescue>
Today it happened again: After an apparently trivial update Grub (Grub2) enters rescue mode the next time booting, not displaying any useful help whatsoever at that point. (Remember that at boot time no manual or help pages are available.) I don't know what went wrong, but ... The harddisk or partition in question is now no longer a bootable partition.
I don't want to use much time trying to sort out things, so unless someone may direct me to at better procedure, I am going to save whatever can be saved from the hd and then reinstall debian (in this case: Sqeeze) from scratch. Nothing else has in my experience ever worked before.
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.
I had Ubuntu installed, i installed Debian and there was no dual boot. So i formated all the hard disk to install only Debian. It installed but at boot i get error: no such device and the grub rescue> prompt. i googled for a solution and nothing worked:
- i tryed reinstalling grub, not worked - i did the windows cd fixmbr trick, not worked - reinstalled debian with fixmbr the first step and nothing - tryed deleting with dd the mbr, not worked - reinstalled grub from debian rescue, not worked
what should i do? i can't access my computer? please tell me how should i fix it? the google guys will kill me because i put their servers on fire
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:
Upgraded from Ubuntu 9.04 to 9.10 via upgrade manager System is AMD 64 Have dual boot with XP on seperate hard drive
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Then the wheelspin:
Seem to have knocked out GRUB as normal loading screen does not appear anymore. Worse, I think I accidently installed grub to something labelled SDC5.
Cannot get anything except the "grub rescue" prompt. I'm not sure if using the LiveCD (9.10) can help. Have tried a few prompts from other threads but just ended up with mud splattered all over the place. I'm gathering I need to load grub, but can I do it using any grub rescue commands?
I had 9.04, then upgraded to 9.10. After screwing it up, it won't boot. Is it possible to just reinstall Ubuntu using the CD? Cause then I would get GRUB 2. I installed kde-desktop, then it failed to boot (I selected KDM) and that somehow screwed it up.
I recently had to reinstall Windows XP and as usual it destroyed my grub setup. I have done this before, so I simply booted from a live CD and typed this in the terminal:
Now, the problem with it this time is that in the past in these situations I had only Ubuntu Feisty and Windows XP installed on my machine. But I have installed Ubuntu 9.04 on a separate partition (retaining the old 7.04 installation separately) since I last had to reinstall XP. Doing the above procedure restores my grub sttings to my pre-9.04 installation (i.e. I only get Ubuntu 7.04 and Windows XP in the grub menu).
Currently I installed Windows Starter, then installed Fedora 15 Alpha from the 'Fedora 15 LiveCD'.Now, I have reinstalled Windows Starter and now my grub loader has been removed.How can I get the grub loader back, with just the LiveCD?Is it possible to do this without the LiveCD?
I previously had a single 160gb drive with two partitions, dual booted for Ubuntu and XP. I then installed a new SSD drive and put Windows 7 on it and of course I lost grub on the MBR. I have gone through this before so I went ahead and booted the livd CD, installed grub then ran
root (hd0,1) setup (hd0)
but then got these errors;
Error 22: No such partition grub> setup (hd0) setup (hd0) Checking if "/boot/grub/stage1" exists... yes Checking if "/boot/grub/stage2" exists... yes
I installed debian testing from hard disk using the netinst.iso. Now how can i get the rescue mode to reinstall grub? During installation i didn't get other options like rescue mode.It guided me to install debian testing from hard disk only.
My system doesn't boot anymore, when I turn on the laptop, instead of the normal grub screen, i get the following:
"error: file not found Entering rescue mode... grub rescue> _"
I tried also to make a bootable usb w/ unetbootin but all the distros failed to load w/ a syslinux boot error message so I really need to fix the existing debian installation to get access to my files i need for the university, it's debian stable (6.0.4) on hp mini 210 ....
I thought I'd have a go at putting back sysvinit to run the start up daemons, after I discovered that upgrading to jessie removed it and slapped on systemd.
I didn't have any problems at all with systemd, infact it was pure speed at start-up, but after some reading I thought I'd like to go back to usual start-up scripts.
What I did was to boot a Live Debian and mount and chroot into my Debian system, then I ran
On reboot, I hit a grub rescue prompt which says error: file not found.
Trying the methods to get that sorted out gets stuck with "unknown file system" after I use ls and ls(hd1,msdos2) -as well as other combinations - it only seems to work for a plugged in flash drive.
Then I chroot again and run update-grub and grub-install /dev/sdb but reboot still stops at grub rescue.
So I wonder, firstly, why replacing systemd mucked up grub. Then, besides re-install of systemd, how do I get a booting system?
It happened when I updated my php5.4 to 5.5 version on my small Debian 7 server. I am only getting GRUB right after BIOS boot pass, then none of the keys working even C or Shift buttons to go to command promt except CTRL+ALT+DEL.
I have tried rescue mode with live CD, selected myserver/root/ partition to install GRUB but not worked.
How to recover my server, I have some important data in it and I don`t want to destroy them.
I just (for the first time ever) installed a version of Ubuntu. It is 10.04. I installed off of the Live Disk. I was having a great time until the first time I went to boot into it and I got the message "Error: No such device: "long number" Grub Rescue> "
I've got Ubuntu 10.04 installed on one partition, and Windows Vista on another. I was messing around with my partitions, and now I can't boot to either one. I just get an error when I boot up on GRUB which says "error: no such partition", and then a prompt saying 'grub rescue>'. I've read up on other people's posts, and they said that I should reinstall GRUB from a livecd, but that doesn't look like it does anything. It seems that GRUB is trying to boot from hd0,8, and that doesn't exist anymore. I can change the 'root' and 'prefix' variables to the right partitions, but the 'boot' or 'chainloader' command doesn't work. You should be able to boot from 'grub rescue>', because that's what it's for, right?
I just want to be able to boot into Ubuntu, not Windows.
PS: Sorry if I'm specifying way too much information(or not enough), I'm fairly new to forums.
I've tried reading other threads about grub rescue but it seems like it only works if the USB stick can actually be read. Sorry if I sound dumb, I'm really new to all of this.I installed Jolicloud (it's based off Ubuntu, apparently) to dual boot with Windows 7 which I got with my netbook. When I tried to get rid of Jolicloud, I think I accidentally deleted a partition-- now whenever I boot up my netbook, I get the black "grub rescue" screen of death.
I tried getting the netbook to boot from my USB but it won't do it. The USB light flashes but nothing happens. I know there's things in there because I can boot from the USB using my desktop. Jolicloud was initially installed from the USB so I don't know why it won't read it anymore.
The day that the upgrade came out (not beta, the true release) I upgraded via the Update Manager. The upgrade went great until it asked me to reset to finalize. Upon doing that, I was greeted with a less than friendly grub-rescue> screen. The materials I currently have at my disposal are a 10.10 installation disc, and an 8.04 installation disc, and a rescatux disc (super grub) that seems to yield an error upon any of the four options presented... how can I use these (both have Live CD) to fix the grub...
I installed Fedora on my pc over Ubuntu and now Grub wont go any further than rescue mode. (Apparently grubs boot folder was on the Ubuntu partition. Now I see why a dedicated boot partition is handy.) I used VMware to install Fedora as im currently out of CDs. VMware is setup to use the Physical HDD for the primary HDD in the VM. (I made sure VMware disabled access to the windows partitions so the guest couldn't access them.)
I am in Windows 7 at the moment and am avoiding rebooting as that will basically lock me out of the only computer I have access to. I tried running the Ubuntu LiveCD to restore grub but dont know how to mount Fedoras LVM partitions. What can I do to repair grub or at least install an MBR that is capable of booting windows? I can boot floppies and cds using VMware but am not sure what to use to fix this.
Fedora LiveCD wont mount any of the partitions to install Grub Ubuntu LiveCD may work if I can mount the LVM partitions.
I have windows 7 64bit on an internal harddrive, a larger internal harddrive for storage and a 1tb mybook external for storage. I have an ubuntu 9.10 iso burned to a cd that i got from the ubuntu site and I had previously installed dual boot successfully on my other computer, a laptop.
I went to install it on my desktop as well and when i was selecting how much space to allocate i noticed it was using the mybook and not the internal. I couldn't see an option to change which harddrive it used so in my ignorance i allocated 50gigs to ubuntu on my 1tb external mybook. This was obviously the wrong decision as after restarting the grub bootloader would not open and grub rescue came up everytime after that.
I have tried booting from the cd, reinstalling from the cd, and using a windows 7 repair cd. I can't even get into non installed version of ubuntu to try and use terminal. I have spent the 5 hours on the internet trying to figure out what to do and i have no clue. I want to get ubuntu off the mybook and get back on windows 7 where i can then reinstall ubuntu properly on one of my internal harddrives.
I have a new installation. I try to boot and instead of my grub menu, I get "error: file not found" and am dropped into the rescue prompt. I have just a standard "Desktop" installation. I installed from the 5.05 net install cd. I installed grub to the MBR.
partitions are: hd0,2 is / hd0,5 is swap entering the "set" command results in: prefix=(hd0,2)/boot/grub root=hd0,2 [Code]...
I'm experimenting a bit with my fedora, so I need to enter rescue mode very often. Every time I want to enter rescue mode, I need to insert fedora DVD Is there a way to install rescue mode on my hard drive so I could boot into rescue mode from GRUB?
I just installed Ubuntu 9.10 on hd1 - /dev/sdb1 at the end of the installation I chose to install grub at hd0 - /dev/sda1. The file system I chose was ext4 for ubuntu "/" - 50 GB, ext3 for "/home" - 5 GB, and 1.5 more for swap. When the installation was complete I got the following prompt:
GRUB loading error: no such disk grub rescue> >
There was nothing I could do, pressing TAB did not show me all the commands like grub is expected to. Typing 'help' did not show any commands as well, instead it showed me - "NO SUCH COMMAND" or something like that (I did not took note of what the output was). I believe the problem is in the grub loader - which was not really installed properly in hd0 - /dev/sda1 (which is FAT32 - windows)
I had windows XP and Ubuntu installed on my Asus 1000HE and the hard drive is failing so I need to RMA it. They told me to restore it to factory defaults which I just press F9 at boot 3 time and Ghost takes over and reformats, creates 2 partitions and installs XP on one of the and the other is for another OS or just storage if needed.
I did that now I get a grub rescue prompt when I boot my netbook. Is there a way that grub installed itself to my PE partition that's a hidden partition that came with the netbook? I've taken the drive out of the netbook and put it into my desktop and formatted both main partitions but not the restore one. Yet I still get the grub rescue prompt, how can that be?? I can't even boot from flash drive or get to bios it just goes straight to the rescue.I need to send the netbook back but can't unless its restored. Right now I'm on the 9.10 live flash drive I made on my desktop and my only hard drive attached it the netbooks.
I tampered with installation process while I was reinstalling ubuntu, now I have this command on my screen and I'm stuck. GRUB RESCUE>_ What do I need to type, to continue installation.
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 ?
