Ubuntu Installation :: Interrupted Upgrade Reinstall Now Grub Does Not Work
Dec 4, 2010
Had a working WinXp/Karmic dual boot system. Tried to upgrade Karmic to Lucid and my daughter rebooted the system during the upgrade. I decided to do a fresh install of ubuntu, leaving Windows in place and it succeeded until the end when it said it could install the bootloader, so I proceeded without. I meant to say "it said it couldn't install the bootloader, so I proceeded without.
On booting, Grub drops to the command line.
I get grub>, not grub-rescue>
I did ls in grub and it showed the partitions I expected
/sda5 is /boot
/sda6 is /swap
/sda7 is /
/sda8 is /home
I tried to follow the grub2 command line manual by entering
Code:
set root=(hd0,7) (success)
linux /boot/vmlinuz-2.6.32-24-generic root=/dev/sda7 ro (failed - couldn't find file)
so I'm now a bit stuck.
Here are my bootinfo_script results (by the way, sdb is just an e-SATA hard disc with nothing installed on it, I don't know why bootinfo thinks Windows is there. Windows is on /sda2 with some sort of backup/recovery partition on /sda1)
Code:
Boot Info Script 0.55 dated February 15th, 2010
Boot Info Summary:
=> Grub 2 is installed in the MBR of /dev/sda and looks on the same drive in
partition #7 for /boot/grub.
=> Windows is installed in the MBR of /dev/sdb .....
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Jan 13, 2009
I reinstalled windows, which wiped out my boot partition. I then booted to a live CD, to attempt to reinstall GRUB. However the usual method and directions aren't working.
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Oct 13, 2010
Originally posted in Launchpad yesterday [Question #129083]:
Quote: System froze in mid-upgrade from 10.04 to 10.10 and now fails to boot, giving a 'general error mounting filesystems' message when loading [in either normal or recovery mode.] However, the boot menu remains accessible with the F8 key and is functional.
While in the 10.10 Live CD, using the chroot method in the grub2 help proved unsuccessful and returned this pastebinned result. The system is 10.04 64-bit running an nvidia card and sporadically froze with increasing frequency. No resolution to the freezing could be found online, which seemed associated with any of nvidia, usb, flash or even firefox. Can someone suggest an alternative to restore to bootable condition and resume upgrade without having to reinstall and wipe the drive? I also followed the copy alternative to the chroot method in the grub2 help and still get the same core dump for chroot and device not found error for upgrade-grub as posted in pastebin. I'm still running off of the 64-bit 10.10 Live CD.
Skimming other "general error mounting filesystems" topics in this section, I realise I may have to bite the bullet and cut my losses, since those other users seemed to settle for a reinstall. Any final advice out there I can try out?
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Jan 6, 2010
I was in the process of upgrading my ubuntu system (probably the latest version, it was about a month ago) and my computer froze (it does that on occasion). I have looked around this site, and tried a few things. I assume I am supposed to use the command "sudo dpkg --configure -a" to fix it. The problem is that when I do that, I get the message "dpkg: unable to access dpkg status area: read-only file system". So, what do I do now? I definitely dont want to mess up my system, but I want to fix it.
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Dec 10, 2010
I have ubuntu 10.10 running on my HP dv5 pavilion laptop So today i tried to reinstall grub on my pc .. i removed grub-pc and grub-common using synaptic then booted up with a live cd of ubuntu 10.04 i then mounted sda11 to mnt using sudo mount /dev/sda11 /mnt sda11 being my ubuntu directory containing the /boot then i installed grub to it using sudo grub-install --root-directory=/mnt /dev/sda it reported as installation finished.No error reported then i unmounted /mnt and checked for /boot/grub/grub.cfg seems like the file is missing so are the files in /etc/grub.d/ reinstall my grub back
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Feb 4, 2011
how do I retrieve/reinstall Grub without having to reinstall Ubuntu?
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Mar 29, 2011
I have Ubuntu 10.10 and Windows 7 on my computer. After not booting into my Ubuntu partition for a while, I noticed that grub had disappeared, being replaced by the windows bootloader. I followed the steps here under "reinstalling from liveCD" and I was able to get a grub command line when I rebooted, but no boot menu. So I booted into Ubuntu and ran update-grub like the instructions say, and the output indicated that Ubuntu and Windows had both been successfully found and added to grub.cfg. But when I rebooted, I still only got the grub command line.
When the instructions had steps for if you had a separate boot partition, I used /dev/sda1 because it is marked by fdisk as being the boot partition. I thought that maybe update-grub was only seeing /boot on the Ubuntu partition and wasn't touching the boot partition, so I tried mounting /dev/sda1 as /boot, but after that grub didn't boot at all, it just goes straight to Windows and I haven't been able to reinstall grub even after following the steps again several times. How can I get grub back?
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Aug 7, 2011
I've reinstalled win 7 (dualboot). Then booted with rescuecd and tried to fix grub.
Code:
$mount /dev/sda3 /tmp/b/boot
$grub-install --root-dir=/tmp/b /dev/sda
This gave ma a grub shell on boot. The prbm was that this was grub1 - v0.97
I ran a proper 2nd time
Code:
$mount /dev/sda3 /tmp/b/boot
$grub2-install --root-dir=/tmp/b /dev/sda
Now on boot I can spot grub loading and black screen with blinking cursos on top. ubuntu 10.10, separate /boot, uncrypted /root (which is probably the cause) Also I have deleted the 2 win partitions (sda1, sda2) and made a new one (sda1). The /boot is still sda3, can this be the cause?
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May 7, 2011
My laptop is sadly rather elderly and the battery is broken, so if it is unplugged it loses power and immediately turns off. Unfortunately I managed to accidentally do exactly this in the middle of upgrading from Lucid to Natty. I turned the computer back on, some automated disk checks were run, and I'm now apparently using Maverick.
Launching Update Manager, I get the following message:
"Not all updates can be installed
Run a partial upgrade, to install as many updates as possible.
This can be caused by:
*A previous upgrade which didn't complete
*Problems with some of the installed software
*Unofficial software packages not provided by Ubuntu
*Normal changes of a pre-release version of Ubuntu"
Clicking the "Partial Upgrade" option, the system starts to upgrade but exits with the following in the Terminal:
"dpkg: parse error, in file '/var/lib/dpkg/updates/0121' near line 42 package 'texlive-xetex':
duplicate value for 'Status' field"
Basically I have no idea what to do from here. The functions that I need from my computer are working (internet, music player) and I don't really need much more than that but I'd rather it was working. Also I can't install any updates or upgrade to Natty until this is solved.
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Apr 10, 2010
Should I upgrade from 8.09 to 9.10 or does this require a clean reinstall? If the latter, then how do I go about doing this as I dual boot Win XP and Ubuntu?
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Dec 4, 2010
In drs305's standout article HOWTO: Purge and Reinstall Grub 2 from the Live CD, in the section where it says:
Quote: From the Live CD:
* If the Ubuntu OS cannot be accessed through the normal boot process (see above), boot a compatible installation CD/Live CD. The Grub 2 files are by default installed in the partition's /boot/grub folder and will be placed in this folder if the commands are run as instructed. (emphasis mine)
I'm not certain what precisely means "compatible" here? Is it using the same desktop (K/X)Ubuntu what is installed on the hard drive? Or the same release number (such as, in my case 9.10) or both or just ---well, you get the idea I'm sure.
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Dec 11, 2010
I have Ubuntu 10.04 with file system EXT4 and dual booting with Vista The problem is I am about to reinstall Vista which will overwrite Grub 2 I know how to restore Grub2 with the Live CD I currently I only have a Live CD of Ubuntu 8.04 which doesnt support EXT4 neither Grub2 I am on a very limited INTERNET so I cant download the Live CD. A solution would be the minimal cd image but the download stall at 96%
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Dec 28, 2010
I'm trying to re-install Grub2 on a dual boot (Win/XP & Ubuntu 10.10) system which will not boot. I am following the guide here:
Code: [URL] This guide explicitly states that the procedure will re-install GRUB to the Master Boot Record, overwritng whatever is there. However, the final step results in this warning message: "grub-setup: warn: Attempting to install GRUB to a partition instead of the MBR. This is a BAD idea....."
I guess I agree - that's not what I want to do. Where is the defect in the procedure and how do I overcome it? If I try alternative advice, available in the forums, by using the command
Code:
sudo grub-install /dev/sda
then I receive the error message
Code: grub-probe: error: cannot find a device for /boot/grub (is /dev mounted?) Looking at the mount command output, I think the required device is mounted.
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Jun 9, 2011
My distribution upgrade got interrupted in a hard way and when I start the computer I get some errors:
Code:
kernel panic - not syncing: VFS: unable to mount root on block 0, 0
or sth like this and a few more errors. Can't look the exact message as I am writing from the liveCD. On Gparted the boot looks normal and it is said that it's mounted but there is no mount point. There are things on the hard drive that I must save.
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Aug 17, 2010
I had Kubuntu 9.04 and Windows XP on a Dual Boot. I upgraded using the update manager to 9.10. (I know, I'm a fool.) The Kubuntu install stated freezing hard on startup, just after the GRUB OS selection screen, at a blinking cursor and otherwise blank screen. I'm pretty sure 9.10 will work great from a fresh install, but the live cd freezes after main Kubuntu boot screen and even Windows live cd only shows Windows partition. fixmb, fixboot, bootcfg etc. do NOT replace the grub as desired.
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Jun 11, 2011
After installing Windows 7 on my laptop, which was already running Natty, I am having issues reinstalling grub. I tried to do this using the method from this tutorial: [URL]... when I enter:
[Code]...
I also tried using --root-directory instead of --boot-directory, and I tried --recheck on both of them without any luck.
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Apr 28, 2011
I wanted to upgrade qbittorrent to the newest version. So I went to the official website and followed the steps of typing some commands in the terminal. However, it said missing libtorrent-rasterbar5. I went to Synaptic and checked, showing "libtorrent-rasterbar6". Does this mean my version of libtorrent-rasterbar is too new?
And I've removed something regarding qbittorrent because I wanted to install rasterbar5. I searched for rasterbar5 in the Net and downloaded it. It connected to the Ubuntu Software Centre automatically but it showed unable to install.
So I thought I failed to upgrade qbittorrent. I just wanted to install the original version (v2.4.0). I did it like the first time I downloaded qbittorrent. Open the Ubuntu Software Centre and search for it and press "install". It failed! Because a type of repositories named "qbittorrent" showing conflict.
I've dealt with a similar problem regarding GIMP successfully before. But I can't remember.
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Jul 23, 2011
This is partly a note to myself for the future and a guide to anyone who experiences similar issues.
So, I had to reinstall Windows XP since my previous installation gave me a blue screen error due to reasons unfathomable. Naturally, this deleted the GNU Grub and I could not login to my Fedora.
I read that apparently booting from a DVD installation offers an option to enter the rescue mode. I did not have a DVD, I only had the LiveCD so I had to figure out a way to reinstall Grub from the LiveCD. The following method seemed to do the trick.
Run the LiveCD and open Terminal.
1. Find the partition where the Grub Stage1 is code...
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Jan 9, 2010
Some days ago I decided to reinstall windows, of course windows wiped Grub of the MBR. No problem. I booted of the live CD (9.10) and tried to reinstall grub, I had Ubuntu 9.10 installed before windows wiped grub. I tried the following tutorial: [URL] My fdisk -l output is the following: root@ubuntu:~# fdisk -l
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000f2962
[Code]....
sda3 is my root partition, sda2 is the partition where all my media files are located. I mounted /dev/sda3 to /media/root and then I tried to reinstall grub with: sudo grub-install --root-directory=/media/root /dev/sda It came out with no errors, and then I restarted my computer. Grub started, but with a command line. It was the 1,97 beta-4 version. Since I'm quite unfamiliar with GRUB (or really technical linux stuff)
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Jun 19, 2010
I dual-boot ubuntu 9.04 and windows 7. I recently reinstalled windows, and it wiped grub-legacy off of my MBR. Reinstalling grub shouldn't be tough, right, especially with clear instructions? Anyway, I can't get anywhere with the official instructions here: [URL]. The first issue is that the current live CD has no program "grub" in terminal. I dug up an old live cd, but I couldn't get anything with the directions:
Find where Grub is. If this gives a few different answers then you will need to find the correct one, perhaps by trial-and-error.
find /boot/grub/stage1
That command didn't find anything, nor did some similar commands found on google.
So I'm really at a loss. What should I do?
-Can I install Grub 2 on my MBR? Will that work with 9.04?
-Can I access my 9.04 install, copy files to Windows, and then just format the partition and clean install 10.04?
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Jan 12, 2009
I upgrade to fedora 9 from fedora 8. After upgrading I still gets F8 modules appear when I used system update. It seem that my Fedora 8 installation has a know bug that updates are halted, and this problem is not resolved during OS update. Since I have not install any other software yet I would like to make a clean installation of fedora 9. How can I remove the fedora 9 from my hard drive and make a fresh installation?
I use GRUB as a boot loader and have window install as well.
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May 1, 2010
when i try to upgrade my system via apt i get the following error:
Quote:
user@user-desktop:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
[code]....
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May 14, 2009
How to installs and I used gparted to create my install of fedora 10 on my laptop (which had xp on it). After a major XP crash I reinstalled with Vista business on the XP partition. Now my linux partition is definately there however I Vista boots now and the grub loader does not come up.
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Nov 8, 2009
For some applications i still have windows XP installed. Because of the fact that Windows has to be reinstalled once a year (it's only windows ) I deleted the MBR accidentely. Now I can't start Fedora again. hen I start Linux using the Installation CD of Fedora 10 my partition is not mounted automatically because I am using LVM.
[code]...
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Jul 11, 2011
I got a system crippling virus on my windows installation. My recovery disks gave me the same problem. So I installed Win 7 enterprise using a disk my dad got from his work. The installation went smoothly. When I started my computer after it went straight to Win 7 without the GRUB bootloader (not the case with restore disks). Could somebody please help me with this issue because I cant stand using Windows for anything other than games much longer.
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Sep 18, 2010
I will be version-upgrading a friends (Ubuntu only) laptop very soon. It is 9.04 now and the new version will be (ideally) 10.04.1 The machine has a large unused area on the hard drive and who has known this situation was to use the uncommitted area to do a complete new install of 10.04.1, leaving the 9.04 unchanged (useful insurance). Then, copy, paste (?) the /home directory from the 9.04 into the newly completed installed 10.04.1 overwriting the installed directory.
Opinions seem to support the notion that such a paste into 10.04.1 is likely to be successful and trouble free as long as the 10.04.1 installing username is the same as the 9.04 username with same privilege level. I would be grateful for comments here, particularly with any details, gotchas, you can see.
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Jun 27, 2010
I have been following (200 instructions on how to do a clean install without losing settings.I used the command<sudo dpkg --get-selections > /home/user/package.selections>to create a list of installed applications.My problem is that the instructions to reinstall those packages does not work. The code given is<sudo dpkg --set-selections /home/package. selections && apt-get dselect-upgrade>.However when I try and run this code I am told that "--set-selections takes no arguments".So I need some revised code to reset the list of applications for re-installation
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Jul 8, 2010
I first installed asterisk using sudo apt-get install asterisk on ubuntu 10.04. After doing this the SIP packages did not install for some odd reason.I uninstalled asterisk using sudo apt-get remove asterisk then reinstalled and now none of the asterisk config files are gone. deleted all files and directories I could find relating to asterisk, rebooted the machine, did a kernal upgrade, and a package update and reinstalled asterisk using sudo apt-get install asterisk, and all the config files are still missing. What am I missing here!
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Jun 30, 2011
I just upgraded to F15 and it went well. But at the next and each subsequent cold boot the BIOS reports "Your system last boot fail or post interrupted Please enter setup to load default and reboot". The board is an asus P5N-D. I press F1 to blow past the error and all is well until the next cold boot. Restarts are fine, no errors at all.
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Dec 6, 2010
i have ubuntu 10.04 64 bit installed and configured and working sweet. I have reinstalled windows 7 and now i can't boot ubuntu i've tried easybcd to add ubuntu to win boot loader which failed and tried to follow the instructions to reinstall grub through a live cd which i am in at the moment. i go to a terminal and type sudo grub and it brings up the grub prompt. i have mounted all discs and entered the command find /boot/grub/stage1 and it keeps spitting this back at me Error 15: File not found
my hd is a 80gb with partions like this
/dev/sda1 105mb ntfs system reserved
/dev/sda2 45gb ntfs win 7 home premium 64 bit
/dev/sda3 34gb ext4 ubuntu 10.04 64 bit
/dev/sda4 1.5gb linux swap
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