Ubuntu Installation :: How To Repair Broken Grub2
Mar 31, 2010
I am currently in a country where the internet speed is roughly 15KB at best, if at all. So I cant download the 9.10 live CD. My grub2 broke when I reinstalled windows (because its so virus prone). This guide: [URL]. Says how to repair grub2 using grub2 live CD. Currently I have access to a 6.10 Ubuntu CD but when I try to mount the boot partition I get an error saying that the filesystem has unknown options. I think that the latest filesystem didn't exist back then and even if that would work. Can I reinstall grub2 using grub? Or is there any possibility to download an ultra small linux live system image with grub2? it seems all ubuntu variations come in 500MB+ packs.
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Oct 23, 2010
I think a recent update to 10.04 somehow has broken my installation. When I turn on the machine, it just sits at the splash screen with the white dots turning orange from left to right as if it is going to boot up.
I have tried letting it sit there but after half an hour it still remains the same. I have tried booting into recovery mode but that fails somewhere along the startup process. Is there a way to 'repair broken installation' when booting up with live cd? I have been able to get to that option and I am trying to avoid doing a fresh install if possible.
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Oct 14, 2014
I have added to Debian Wheezy testing repositories. After a restart there is no desktop anymore just the wallpaper picture is visible but no desktop pop-ups.
When I want to install the desktop through recovery mode, I get an error message that it "can't fetch...repos". How I can repair /etc/apt/sources.list through recovery mode?
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Jul 8, 2010
I took the distribution upgrade from the update manager and can't boot now. Boot into a Live CD (ver. 9.10 - does that matter?), and go through the following steps.
ubuntu@ubuntu:~$ sudo fdisk -l
Warning: invalid flag 0x0000 of partition table 5 will be corrected by w(rite)
Disk /dev/sda: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000ad56f
[Code]...
Anyone have an idea here? I have searched a lot and have only found a few references to this issue. Does the invalid flag message relate here? The partition is flagged as 'boot'.
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Feb 5, 2011
So I install Ubuntu 10.10 on a multi-drive, dual boot with windows 7 computer. At almost the end of the install, I see "running grub-install sda" or whatever it is. sda is my windows drive.So rather than asking where to install the bootloader or give you the option like it used to, it just did it to my "first" drive.
What the hell? Now my Windows MBR is gone. I like to maintain that so if my linux drive dies I can still boot into windows via the old windows boot loader.Possible to move Grub2 to my other drive and repair windows 7 drive MBR?
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Sep 1, 2011
Is there any way to repair halevt? If I reinstall via synaptic the installation fails with HALevt error 100. Then all installations of any kind report same error. I researched and found a way to remove the app install bug. However, mounting, accessing usb devices is still heavily problematic. I assume halevt needs reinstalling, but seems impossible.
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May 3, 2010
As a suggested fix to solve a problem with cairo-dock, on 5/2/10 at 11:00pm, I ran the following in a 9.10 terminal window:Code:sudo apt-get dist-upgradeThis somehow deleted all of my kernel images, and a bunch of other files.I'm running the livecd now. Is there any way to run dpkg from the livecd on my mounted HDD? I can't access anything while booting up the HDD except for memtest in the grub, so going into recovery mode is impossible.
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Mar 25, 2011
I'm sorry if this topic has already come up, but My package manager is broken, and when I press repair, it says it can't repair because the package manager is broken. I'm pretty sure the code is
Code:
sudo apt-get install -f
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Jul 17, 2011
I seem to have detached the menu system from the bottom panel. There also used to be a large 'K' on the left hand side of the panel that I could click to open the menu system - it is gone too.
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Dec 21, 2010
"the following problems were found on ur sytem: there are multiple versions of 'drakconf' in your system this package wont be cleanly updated unless u leave only one version." not only darkconf several other files too has the same error. how to uninstall duplicates?
i left the pclinuxos update (via synaptic pckage manager) and wen i came back i saw the pc had shut down, and the above and bottom toolbars has dissappeared. and the above error wen i start the package manager. how can i make a cd repair install? if this is the solution.
edit: i uninstalled duplicates but still the gnome deskop toobars still not there??
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Dec 24, 2010
I have a win7/10.10 dual-boot set up, more or less following the lifehacker.com tutorial (I know, I know). I had to reinstall windows, and its taken over the MBR so that only win7 boots now. My shared drive and the ubuntu filesystem are still there, I just can't get to them without a boot cd. So, I tried to follow the tutorials, which all basically say to reinstall grub or grub2. I tried one method, but ubuntu told me that installing grub2 anywhere but the MBR was a bad idea
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Jan 7, 2010
So I know I should have known better then to turn my updates back on after the 15 and 16 kernel updates crashed ubuntu and grub but I did anyway and once again after a new kernel gets installed I'm stuck at the grub sh prompt.
Been down the road before... tried using
linux /boot/vml....... root=/dev/sda1 loop=/ubuntu/disks/root.disk ro
When I use the 16 or 17 kernel I get an error stating "invalid imaginary number"...
So I use the 14 kernal and enter
initrd /boot/initrd.....
boot
And it boots like it did the last time this crashed. I went to the terminal and entered
sudo apt-get install grub 2
sudo update-grub2
And then rebooted like I did last time expecting the problem to be fixed and at least be able to boot up the 14-generic. It didn't fixed this time. So now what do I do to fix grub and what do I do about having 2 unbootable kernals??
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Jul 9, 2010
I have a following problem: Recently my drive with Ubuntu 9.4 has mysteriously stopped working, i.e. when I switch the computer on it informs me that GRUB didn't find the filesystem. Well, I suppose it happens.
First, I though it was due to the drive dying, but I popped it in an external enclosure and HDTune told me the drive was fine. Wanting to recover the files on the drive before reinstalling I first tried to mount it in said external enclosure under Windows (I have Win Ext2 driver installed which used to work just fine). This time, however, drive gets assigned a letter but upon opening it Windows popped up an error saying that the drive was not formatted and whether I would like to format it then.
Unfazed by this streak of failures I tried to mount it under Linux but, alas, to no avail. I might have tried every single -t operator under mount command but it still won't budge and let me mount.
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Jan 11, 2011
i havent really had a chance to ask this for a while, but im in a bit of a bind. im trying to do a release upgrade of 9.04 through to 10.10. I'm stuck at getting karmic to reboot because of a grub problem. I keep getting "error 15" file not found. Not one single forum post has helped for some reason which is strange. Release upgrades have always worked even though not recommended, but this one of all has been the worst of the lot and totally insane.
Im testing in a vmware before i do this for real on the production server, I am using a raid1 setup and boot partitions set to md0.
my fstab after the upgrade before i reboot looked like this
# / was on /dev/md1 during installation
UUID=######################## / reiserfs relatime 0 1
# /boot was on /dev/md0 during installation
[Code]....
I tried to first install grub2, i confirmed it installed and worked perfect, and therefore removed grub legacy.
Ran do-release-upgrade , it completely uninstalled grub2, and it also fails at building /initrd.img-2.6.31-22-server and adding into the grub menu therefore the upgrade fails with this error. I reinstalled grub2, the menu came up fine but trying to load a kernel gave me something like
alert ! /dev/disk/by-uid/############## does not exist.
What is the go with this ? Ive been trying to make this work off and on for 6 months
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Jun 4, 2011
2.6.38-8-generic
Mint 11 32bit
I got an Upgrade manager notification in my panel so clicked it to see what needed upgrading. However when I went to upgrade I got an error message saying I had to fix broken packages first. See Screen shot. I opened Synaptic and this says there are no broken packages see synaptic screen shot... Is there a CLI way to look at and repair installed packages? (I checked other threads on LQ and found some advice for Fedora 8 which suggests running an rpm command, however rpm is not the package manager of choice for Mint.)
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Mar 7, 2010
i initilally installed ubuntu 9.10 then installed windows 7 ,then i recovered grub2 using livecd as told in the post [URL] i did "sudo update-grub" and got windows 7 menu entry but when i select that entry windows 7 does not load but the grub2 is reloaded again.
i cant boot to windows 7.
Windows 7 have 100 mb partition "System Reserved" the grub2 points to that partition but still windows 7 not loaded.
sudo 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: 0x3c3a81f5
[Code]....
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May 17, 2010
I went through so many post but I haven't found the proper answer yet hope you have an Idea1. Grub2 saves only Linux OS as last selected no Windows OS2.It is possible to boot into a cdrom (drive)?
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Nov 10, 2010
i know i asked earlier but i got my usb to be mounted on a different fedora distro. how do i now find my documents or repair it? also how do i add in a repair line if possible?
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Apr 3, 2010
I managed to mess up my ubuntu 10.04 and now i can't repair.What am i doing wrong ?
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Apr 30, 2010
I had been running ubuntu 9.03 for quite some time, but for school I needed windows, so after installing windows on a free'd partition, it will not give me the ubuntu boot option and loads staright into windows(vista)[typical windows]. I am aware that one is able to repair it with an ubuntu boot disk, but my dvd-rom isn't functioning.My question is, is it possible to repair it with a USB stick instead?
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Jun 5, 2011
I recently upgraded to 11.04 on my WUBI and after a while the OS just stopped booting. Every time I try to boot it drops to the grub command line. I can't boot manually because it says file not found when I enter "linux /boot/vmlinuz-2.6.38-8-generic" And I can't repair the installation through the LiveCD as it gives the error message:"(initramfs) mount: mounting /dev/loop0 on //filesystem.squashfs failed: Input/output error.Can not mount /dev/loop0 (/cdrom/casper/filesystem.squashfs) on //filesystem.squashfs".Can anyone help with restoring the OS?
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May 17, 2010
I upgrade from 9:10 to 10:04 and then I erased some repositories entry now I cannot upgrade. what next
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Jul 13, 2010
I accidentally deleted the main default menu panel at top of desktop.Is there a way to recover it.where in the system would I find the various icons that are located in it.A list of the icons in each category?Or do I need to use the installation disk and repair / reinstall?
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Oct 28, 2010
I get this message when I boot
init: udevtrigger main process (440) terminated with status 1
init: udevtrigger post-stop process (449) terminated with status 1
init: udevtrigger main process (447) killed by TERM signal
I'm now on the live cd, is there anyway to either fix that, or just repair the system? I tried booting in safe mode too, none of those started up either.
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Jun 19, 2011
I have Ubuntu 11.04 on an AMD64 machine (HP Pavilion DM1). It worked fine for a while but recently any time I try to invoke the Update Manager.I have had some incidents of being unable to resume after sleep (until I disabled the catalyst driver) so possibly in one of those that file got hosed.
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Oct 3, 2010
OK, so about a week ago or so my Ubuntu 10.04 install no longer recognizes my iPod Touch or Iphone. I have had no luck getting them to work. i REALLY do not want to fresh install Ubuntu. Is there a way I can like repair or restore (a la "Window$") that will fix the OS itself without removing any programs or settings?
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Apr 24, 2010
I've been trying to fix this problem for quite a few days now and have done a lot of searching on these forums, Linux Mint Forums and some others Google lead me to and have has some success, but am now stuck.I have posted a thread on this same topic on the Linux Mint Forums, but have had no success (if you want check it out at:URL...Originally I received error messages when trying to update involving certain repositories which couldn't be accessed (because they either didn't exist or had been moved) and I hunted these down and changed or removed them.
I have done much searching, etc. and cannot find any broken packages. I have tried many many different commands which have mostly done nothing.I seem to be in a similar boat to this person: URL...
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Jan 21, 2010
Installed windows xp on new ata Hdd and added ubunto next; got error 18 ; used the Fixmbr at the win console for repair; able now to access my windows but not the Ubunto; I guess Grub removed on repair. Would like to bring ubunto back.
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Mar 22, 2010
When I attempt to boot into Ubuntu 9.10, I get the error: "Error 15: File not found" I know the reason for this - I deleted it - Doh. A latest upgrade told me I didn't have enough room in the boot partition to install the latest files, so I thought it would be a marvellous idea to remove the old stuff, to give it some room. I obviously deleted something that I needed by mistake. I was using synaptic to do the remove & thought I would be safe. A good learning experience.
In grub menu I have options: Kernel: 2.6.31-15 - generic and also its recovery option, both of which get the same error. (It's a dual boot with XP as the original os). Ideally I'd just like to get the latest working kernel and put it somewhere appropriate, rather than do a full install. Is this possible and if so how? I have a separate boot partition (in dev/sda5), swap (sda7) and Linux (sda6).
[Code]...
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Apr 1, 2010
I removed compiz from synaptic and also metacity. now ubuntu boots but only in terminal mode. i tried to re install both synaptic and metacity from the terminal but i have no internet connection via the terminal, how should i connect? i am also trying to use the ubuntu 9.10 cd to repair my ubuntu but i don't know how.
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