Ubuntu :: Windows Corrupted GRUB - Unable To Reinstall
Dec 26, 2010
for some reason Win7 has gone and run a startup repair (there was two boot options in GRUB, perhaps I chose the wrong one by accident) which has corrupted my GRUB. Now, the only way I can get anything to run is by booting Ubuntu of a live-pendrive/flashdrive! I tried following a couple of walkthroughs that claimed to fix the problem; and I don't doubt that they work - on someone elses computer! I receive errors whenever I try to use things like 'sudo grub' and often (but not always) with 'mkdir' and 'mount' - and I have very little idea what some of them are doing (I gather 'mkdir' is making a directory and 'mount' is mounting a device virtually, but some others are a little harder to guess)
So, I am wondering if someone has a little insight as to how I can fix this and perhaps point me in the correct direction to learning about making my way around ubuntu and these fancy terminal commands! Currently, I am at the stage where I can boot into my flash drive by spamming escape before the bootloader. However, when GRUB loads it tells me there is an error and gives me a command line; through which I have been unable to get anything to happen. I am running Ubuntu 10.10, I believe, and Windows 7 on the same hard-disk and possibly the same partition (though, I am unsure of how Ubuntu works itself into partition's). I also ran a little code (seemed somewhat like a batchfile in windows) that made a txt file of my boot info; I'm attaching it below if that helps at all. Boot Info Results:
I am actually facing a vague problem here. I was previously running Windows XP and Ubuntu . Ubuntu was installed Windows XP The problem is
1. First I tried to do some disk partitioning. That ended up with some error.
2. Ignoring that, I went to install Windows 7 over Windows XP but I was not able to proceed with Windows 7 , because the partitions were corrupted.
3. So I used Ubuntu LIVE CD (Grub was lost at this point )and used 'testdisk' and recovered the partitions.
4. Now installed the Windows 7 successfully.
5. Now again I moved to Ubuntu Live CD to write the GRUB. After which I tried restarting
6. Now Ubuntu is booting perfectly as before. But the problem is with Windows
7. The GRUB loader instead of showing Windows 7, it shows Windows XP !!! . and there is no other entry for windows. When I tried opening it, it says "error, cant read file" and further inout moves back to the grub loader list again.
"How do I change the entry to Windows 7 from Windows XP and boot Windows7 successfully " I tried it a couple of times, same thing happens . So how to change the entry?
My dual booting Unbuntu/windows computer is failing to boot. I have tried to reinstall GRUB but have so far been unsuccessful. I used the Ubuntu Secured 64bits live CD to run Boot Repair and this reported:
There is no boot backup on this computer. This will reinstall GRUB bootloader. Do you want to continue.On continuing, "Boot Repair" reported under "Last Confirmation/Advanced Options":
(Requires internet) Manually purge and reinstall the GRUB of: Ubuntu 11-04 (sdb1).When I click Apply, Boot Repair asks me to enter the following in a terminal:
sudo chroot /mnt/clean/sdb1 apt-get install -y grub-pcHowever, the terminal then responds: chroot: failed to run command apt-get : No such file or directory.Which was quite disappointing!
I have also tried Super Grub2 Disk and Rescatux and these also failed.I entered "sudo fdisk -l" and this seemed to identify all the disks and partitions corrected (I will supply the terminal output in a following post). The only issue is that I expected sdb1 to be indicated as Boot, but it wasn't.
I'm running dual OS Windows Vista Bussiness and Ubuntu 10.10 on my acer notebook. But a few days ago after I update the kernel (I think), I can't boot to my windows OS. It's only stuck at boot screen (progress b4 logon to windows), so I want to reinstall my windows with windows XP. But, if I do this, the grub must be replace by windows bootloader. how to reinstall the grub?? will the new grub, allow me to load the latest kernel which already install on my Linux?
I re-installed Windows over an old Windows partition. The hard-drive used to have Windows and Ubuntu on it. I am now in usb live ubuntu because grub doesn't appear anymore when I boot the computer (it boots in the new windows automatically). The ubuntu partition is still there, as I can access my files from this live usb. I'd just like to know how to re-install grub.
I have (had) a dual boot system of Ubuntu (11.04) and Windows 7. I was forced to reinstall Windows over itself and it installed its boot loader. How do I get my Grub boot loader back? I googled it and found instructions, but they were from 2007 so I thought it might only be for Grub Legacy. The instructions were as follows:
Boot from a live cd run "sudo grub" in a terminal then, "root (hd0,0)", "setup (hd0)", and "exit" reboot and grub should be present
While I wait for ubuntu to download so I can create a live cd, can someone confirm if this is correct for Grub 2? Also, what commands will tell me which hard drive and partition I need to put in the above commands (hd0,0)? I have (4) internal hard drives and boot drive has a few partitions on it.
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.
I had a dual boot system - windows in primary active /dev/sda1 and fedora in /dev/sda5 onwards till /dev/sda7 ( /boot, / and swap partitions).I reinstalled windows vista and it removed grub and replaced it with the MBR or windows loader.So now I can't boot into the linux OS. I tried out a live cd and tried grub-install --root-directory=/mnt/_boot /dev/sda (after mounting /boot partition at /mnt/_boot location from the live cd.)But on reboot I donot get the menu.lst options, only the black screen with a grub prompt.
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)
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?
I had two OS in laptop windows vista and linux mint and when I used to start my computer I used to get different option for os like linux mint, linux mint memory check, windows vista etc.. but because of virus windows vista got crashed so I formatted disk drive C: which were containing windows vista and reinstalled fresh copy of vista.. but now when I start my computer vista start automatically, I do not see GRUB options to run windows os or linux mint..Is there a way to reinstall GRUB to get options like I used to get before formatting ?
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.
i have windows xp and federo installed on my system on seperate partition and using grub loader for dual boot. Unfortunately am unable to boot the windows and it hangs with the blue screen and with safe mode it stops at mup.sys and doesnt proceed further.I tried booting with a windows xp CD but it looks like it is unable to recognize the disk even if i say boot with a CD in BIOS settings. Does anybody knows how to make the CD recognizable so that i can go into the windows repair mode.
i got a problem in my laptop so i moved the hdd from a laptop to another one like it slack worked but win 7 didn't so i booted slack moved my files from the windows partition to the slack one the i formated the windows sector now i can't go to the Slackware and boot it and i have my files in the /home/root/Desktop so i did try to boot a live cd but i can't access to this file.
I have a windows XP Pro machine and also a Server running ubuntu, the server was built for me and the builder is no longer available for consultation. The server drives which were on my desktop beside my C drive were working flawlessly allowing me access until windows started running quite badly which meant I had to reinstall it. After the reinstall I could not see the drives displayed and I am unable to access them from windows. And also not able to mount them. The server has not been switched off at any time and does not even have a monitor or keyboard or mouse. I have not done anything to change any settings to it. I have zero knowledge of the system. My windows administrator password is exactly the same I have looked on the server and my files are intact I just cant access them from windows which I need to do.
I got the following details off the server: KERNAL LINUX 2.6.27.5 - 117. fc10.i686 GNOME 2.24.1 MEMORY 881.4 MiB Processor AMD LE 1620 Samba Server Version 3.2.4-0 fc10
I was told the drives should appear on their own but that's not happening I am not able to sight them at all file sharing and printer sharing is enabled.
I need to reinstall my windows 7 partition, but I don't want to lose my ubuntu partition. Currently I just have both installed and grub is dealing with my booting options.Is there any way I can reinstall windows without messing up grub or my ubuntu partition?
I recently installed opensuse 11.2 on my laptop which also had windows vista and windows 7, i created a new partition and the installation went smoothly, after i went to boot back into windows 7 i got a blue screen of death, strangely vista boots perfectly.I could just reinstall windows 7 but its a pain to reinstall all my programs and such
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
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...
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
I use KDE 4.5.1 on Ubuntu and every time I maximize a window the windows decoration look wrong: there are no more borders on the decoration when maximized. The windows title and the buttons have no space between them and the screen border at all. Not even one pixel.
- buttons & decoration still there - decoration borders, corners & placeholders all gone!
This happens with every single windows decoration I choose.I use all default settings on the kwin-effects.
Yesterday all my troubles seemed so far away, because I've been using working system with Windows 7 & Ubuntu 10.10, but last night I decided to update to 11.04 from update manager. So, when upgrade was done, I rebooted and saw something like this:
"grub_env_export not found grub rescue > "
Do I have a problem with MBR? Will it help, if I load from Ubuntu live cd and try to reinstall grub?
Upgraded to Lucid from Karmic last week or so, everything was fine. Today i needed to log into windows to set up some stuff, closed everything the ormal way, went to windows, came back and after Grub: Disaster! black screen, then corrupted graphics on top of the screen. Rebooted, same thing. Rebooted, went to recovery mode... same thing! No freaking idea whats going on, 9.10LiveCD works fine, but i have no idea whats going on.
My machine: ASUS N81V with ATI HD4670 graphics
Guess ill have to use windows for the time being... :S
I have a dual boot drive, one is WinXp the other Ubuntu 10.04. I don't know why, but my ubuntu partition became corrupted (booting from live cd and inputing fdisk -l in the terminal, shoes my partition as unknown type) My Grub was on this partition, and therefore I cannot boot neither one of my two OSs. I would like to recover my linux partition, I figure I can do that only from my WinXp partition, but I don't know where and how to install Grub.
Also, If anyone knows how I could recover from the live CD without booting Windows, please speak up, that would make everything much easier. Another thing, it would be just super if I could recover my whole partition, not just the data, because I would hate to reinstall all the stuff that I had on my Ubuntu.
I have just installed Ubuntu, now when logging into my laptop i am able to sucsessfully load ubuntu but i am unable to load the original OS (windows 7).
The grub 1.9 bootloader gives me the option
When selecting this option it goes to a black screen with a - in the top left of the screen then the grub screen re-appears
