Ubuntu :: Windows Deletes GRUB Each Boot?
Nov 7, 2010
Each time I boot into Windows 7 on my dual-boot setup (the other OS being Ubuntu Maverick), the computer is no longer able to boot. I can use Windows fine that once, but after shutting down and restarting it simply loops during boot in the pattern OEM screen, power off, power on, OEM screen, power off, power on... you get the idea.
I have read that this is due to Windows (or a program inside Windows) "fixing" the Master boot record (MBR) each time it loads - and in doing so, deleting GRUB. Thing is: on my other laptop the exact same dual-boot setup works fine. My problem laptop is a Samsung R780. My guess is that it's a specific program on my laptop, as oppose to Windows in general, which is doing it, so I was hoping that you could help me either identify the problem program or secure the MBR against Windows writing to it (if that is possible).
I can, of course, fix GRUB each individual time it is destroyed by installing it again using the Ubuntu live CD, but this is obviously not a permenant solution as, upon the next boot of Windows, it is destroyed again.
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Aug 26, 2010
I booted into Windows 7 three times this summer and each time I did, upon restart grub was missing. In fact, the computer couldn't find any operating system, and displayed an error "No Module Name Found".
how to make windoze not commit suicide and delete grub?
I have a Dell Studio 1557.
:~$ uname -a
Linux dell-monsters 2.6.32-24-generic #41-Ubuntu SMP Thu Aug 19 01:38:40 UTC 2010 x86_64 GNU/Linux
:~$ sudo fdisk -l
[Code].....
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Feb 28, 2010
I have deleted sda1, sda2 as they were XP partitions that I no longer wanted to use (yay!). After doing so, when I rebooted I just got a blinking cursor. I was able to boot with the Ubuntu 9.10 install CD, and found that I could elect to boot from the first hard drive, and in doing so the usual grub menu was displayed, and I could boot to my Ubuntu 9.10 partition (sda5 inside of sda3 extended partition). So, noobid that I am, I figured I would try to 'fix' grub. ran commands grub>root (hd0,4); grub> setup(hd0)
Now, when I reboot, it goes directly to the grub command line, no multiboot menu, and I cannot find a way to boot to my Ubuntu partition. The partition is still there, though, as I've checked from the Ubuntu CD.
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Dec 20, 2010
I've been using Linux for over a decade, so no need to worry about the obvious. I'm positive that I have my partitions/install correct. What has me baffled is that Fedora 14, which uses GRUB 0.97 (GRUB legacy) - boots Windows flawlessly every single time on the same hardware, but Ubuntu's (or the upstream Debian's) GRUB legacy do not - even though they are based on the same upstream code from the GNU Savannah servers.
No matter what I've tried I cannot get the Debian or Ubuntu version of GRUB/GRUB-legacy to boot any recent Windows 64 beyond XP (Vista or 7). All that it does is resets the computer when Windows attempts to boot, without an error. GRUB is notoriously difficult to compile, so before I try to compile code from RedHat's archives - any thoughts,experiences, similar issues - whatever?
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Nov 1, 2010
I got ubuntu 10.04 lucid lynx along with windows (dual boot) and using Grub. On my computer, I have my C:/ (programs) and D:/ (data). I've never used my D:/ before that day that I've lost my windows partition on my grub menu. I usually use my D:/ with windows. The first time I used my D:/ to store data with linux, I lost my windows option in my grub menu. I'm not sure what I did wrong but I do want to restore my windows option in my grub menu.
After "fdisk -l",
I checked in /boot/grub and there is no menu.lst to modify. how I can get back my windows option in my grub menu ?
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May 2, 2011
I installed 11.04 after Windows 7. when the GRUB boot menu starts up there is an option for Win 7 boot but it will not boot windows. When that option is selected the screen changes colour for 2 seconds and then reverts to the GRUB menu. Ubuntu boots fine.I downloaded the Boot Info Script and ran it, the results are
Code:
Boot Info Script 0.55 dated February 15th, 2010
============================= Boot Info Summary: ==============================[code].....
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Nov 15, 2009
Slackware 12.2 has the unkind habit of deleting all the /dev/fd?u* floppy special files upon boot-up. I have to make another directory (I use /floppy) to contain these files so I don't have to keep copying them from an earlier distribution (12.1) Now, for example, to format a 1743 kilobyte floppy, I do fdformat /floppy/fd0u1743 mformat a:If I copy these special files to /dev (where they belong) then some part of Slackware Linux 12.2 deletes the special files when I power down and power up the machine.Slackware 12.1 and earlier leave floppy special files severely alone upon shutdown/startup.I cannot seem to "grep" a reference to /dev/fd anywhere in /etc/rc.d or its subdirectories. Why is Slackware 12.2 deleting them?
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Jan 9, 2010
I have a Compaq Presario CQ60 with Nvidia GeForce 8200M graphics card. When I first installed Windows 7 followed by Karmic in dual boot I could boot into both OS. Now when I try to boot into Windows, it displays the Windows logo and then drops back to the grub menu. It may have started happening after Windows 7 installed updates. I tried reinstalling both Windows and Karmic again and it again worked initially but now Windows no longer boots. Does anyone have any suggestions about what may be causing this or how I can fix the problem without reinstalling?
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May 7, 2010
I had 9.10 installed and I did an upgrade to 10.04. However I cannot see anymore my Windows Vista partition with grub.. I have a Toshiba laptop Satellite p305.This is my boot script output:
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 [code].......
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Jan 1, 2010
Whenever I select Windows 7 under GRUB, it just hangs at a flashing underscore windows 7 is installed under my first primary partition, what should the GRUB section look like for it? I can't check what mine looked like because this happened:I started up the windows 7 recover (another option under GRUB, on hd(0,3). 7 is on hd(0,1)) and it worked. I decided that i wanted to try something else before i restore my windows 7 partition to its factory state, so i exit the recovery thing. Next thing I know, my Ubuntu partition is completely gone, along with my grub.cfg files -.-
Partitions are like this in this order:
sda1: Windows 7 (can't boot into)
sda8: ubuntu (gets erased)
sda5: partition i'm going to use soon for another distro
[Code]...
oh, and by default, there was like 20 MB of free space in front of my windows partition (idk why asus did that) and when i shrunk my first partition (the windows one) it moved it all to the left -.- do you think something when wrong while doing that?
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Mar 5, 2011
how to be able to add windows 7 to my grub menu or to even be able to boot to windows 7. I am currently unable to do it and my system just automatically goes straight to ubuntu. I've tried holding down SHIFT during startup and all that appears in my list is ubuntu entries and a memtest entry. My windows 7 files are still intact because I can see the drive through ubuntu and see all my files. I am trying to have Windows 7 on one hard disk that is 640GB and ubuntu on a second hard disk that is 160GB
[Code]...
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Nov 8, 2010
I'm trying to dual boot Win7 and Ubuntu WITHOUT using Grub. This is to support Bitlocker encryption.
I followed this guide, and now when I select Ubuntu I get a Grub> prompt and no ubuntu.
I feel like I'm halfway there, I just need to get Grub to load correctly or something.
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Jul 3, 2011
i am having a problem with my dual boot setup. I originally installed windows XP on a 100gb hard drive, from there i downloaded and burnt ubuntu off so i could install it on my 200gb hard drive. For a little bit i struggled to even get it to install because it wouldn't recognize my onboard nvidia graphics, i ended up having to get an alt boot disk and fix it with technique in this link:
[URL]
Now after the bios boot, my screen shuts off for awhile and takes me directly to the login screen for ubuntu. No Grub, no windows boot options, nothing. I tried booting windows by choosing it from the bios boot menu but all it does is hang at prompt and doesn't boot at all. I tried the live cd fix and reinstalled grub but nothing changed. What i think is happening is that it boots the Grub menu but it doesn't display it because of graphical confrontations. It hangs for about 10 seconds, the grub default time, and then turns my monitor back on to display the Ubuntu login screen.
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Mar 23, 2011
I had a dual boot system with 3 partitions, Windows 7 on one partition, and Windows XP on another partition and a Data partition. I decided to load Ubuntu 10.10 on the Windows XP partition.During installation I selection manual partition, and deleted Windows XP.after successful completion of Ubuntu installation "Grub" directly boots into Ubuntu, it doesn't show me the OS selection screen. After following some forum posts I did an update grub
Code:
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-2.6.35-22-generic
Found initrd image: /boot/initrd.img-2.6.35-22-generic
[code]....
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Sep 11, 2010
Is it possible to have the Windows bootloader point to Windows 7 and a Linux partition instead of using GRUB to point to Windows 7 and Linux?
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Apr 20, 2010
HW config is: AMD Athlon 64 X2 5000+ Black Edition, MSI 785GTM-E45, 2X 1Gb Kingston HyperX PC2-8500. I have set up GRUB to dualboot openSUSE 11.2 and WindowsXP. Initially i had set up system with defaults: CPU@2600MHz (200X13) and therefore RAM@800MHz. Both openSUSE 11.2 and WindowsXP worked just fine. Memtest86 found no problems.
But after a while i decided to change this setup to: CPU@2500MHz (250X10) and therefore RAM@1000MHz, as it promised better overall performance. And now Windows still boots and works better then before. Memtest86 still can't find any problem. But openSUSE 11.2 hangs at boot. I've suspected cpufreq governor, but changing from Ondemand to Conservative in /sys/devices/system/cpu/cpu0/cpufreq doesn't help.
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Jan 10, 2010
I just set up a dual boot on a system with fedora 12 and XP. XP in on one hard drive (sda) and Fedora on a second hard drive (sdb).
I installed grub on the Fedora disk so as to not touch the windows disk at all.
Prior to installation, in the bios, I set the Fedora disk (sdb) first in the boot sequence, and then XP (sda) so that the grub loader would boot up by default. (If I set the windows drive first then the system bypasses grub and loads straight into windows.)
My system can now boot up into Fedora fine, but if I select windows from the grub loader menu I just get a blinking cursor - windows will not boot.What do I have to do so that grub can boot into XP?
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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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Jan 22, 2010
i installed ubuntu 9.10 for the third time on my lenovo s10e running windows xp. my first two installs went good until ubuntu tried to update gnome to the latest version and my computer went to sh grub on reboot, so on my third install of ubuntu 9.10 using wubi i turned off updates and the computer was working wonderfully for weeks until i let my netbook battery die.then the dreaded sh grub on reboot. i really like ubuntu and prefer to use it over xp.
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Dec 20, 2010
I'm wondering about the best way to manage a dual install of Ubuntu and Windows XP.
I had Ubuntu installed on my HDD, but I wanted Windows also, so I used a live CD to partition the drive, and opened some space for a Windows partition. I installed Windows in that space. Naturally, the install set up the computer to boot directly into Windows. I want to set up GRUB to load and allow me to choose my OS on boot.
I'd like to use Super GRUB Disk to install GRUB on the MBR of the disk to allow me to choose at boot.
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Jan 23, 2011
I HP pavillion dv2715nr with Windows 7 Professional 32 bit and Ubuntu 10.10 64-bit. I first install Windows 7 then installed Ubuntu 10.10 64 bit (grub2). And upgraded to Kubuntu. I can log on Ubuntu.
Problem: If I select Windows 7 from grub menu screen goes black and nothing happens.
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May 16, 2011
Grub is gone but still there can only boot to Windows?
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Jun 12, 2011
So after completely giving up on linux for a year... after problems with installing grub, i reluctantly decided to give it another shot.
So I installed a new copy of kubuntu, everything worked correctly except one problem arised with my windows partition. When i try to boot windows through grub, it simply directs me back to the grub boot menu. I can boot kunbuntu fine.
I have tried recovering startup issues by using a windows 7 disc and also run bootrec.exe.
I had no problems running the command /FixMbr however /FixBoot has issues....
My partitions are as follows:
I think the problem is that grub has overwritten windows boot files so everytime i try boot windows it reverts me to grub in a sort of loop.
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Jun 22, 2011
I installed Kubuntu 10.04-2 on a small hard drive, its in my computer along with my large hard drive which is devoted to Win XP. The Kubuntu worked fine for a while, then somehow the GRUB got transferred onto my Windows hard drive. I'd like to get the GRUB off my Windows hard drive and have that boot via its usual Windows method. I reformatted my small / Kubuntu hard drive, that did not help. In fact this made things worse, now there is no Kubuntu in my computer, so now I can't get into either Windows or Kubuntu. How can I get rid of the GRUB AND have Windows boot up normally?
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Jan 14, 2010
i've a little problem with the grub loader. I've two OS in my laptot: Ubuntu 9.10 Karmic Koala 64bit and Windows 7 64bit. But i can't boot Windows 7 from the grub loader. The grub still load the /dev/sda1 partition that is the recovery partition of the laptot, while windows 7 is in the partition /dev/sda6. I tried to modify the path in the grub.cfg, but still load the wrong partition, how i can do?
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Apr 30, 2010
I had been dual-booting Ubuntu and Windows 7. Today I upgraded to Ubuntu 10.04 and now Grub still has a Windows 7 boot option, but when selected it goes to a blank screen and does not boot Windows 7 as it would before.
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Jun 6, 2010
I upgraded to Ubuntu 10.04 recently and now have MBR problem. When selecting Windows XP from the GRUB menu the screen defaults to terminal mode with grub rescue> displayed. I admit I know little to nothing about Ubuntu, unix, etc other than I like what I have seen so far and am trying to learn more. I need to (unfortunately) use Windows and have data on it that I can't afford to lose. How can I repair the problem so I can boot Windows from the menu? Thank you
P.S. I was dual booting successfully earlier. I had the previous version of Ubuntu running with Win XP and everything was fine. The problem started when I upgraded to Ubuntu 10.04. I have tried reinstalling 10.04 with no success. If I am unable to get dual boot working my wish would be to save my Win data and then I can wipe clean and reinstall Win and Linux.
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Aug 4, 2010
Yesterday I made a thread about going back to Windows as I'm giving this laptop to a friend. Anyway, after I finally got Windows to re-install I'm now stuck with "grub rescue" instead of the OS booting. Is there anyone who knows a way I can get rid of grub rescue and get Windows to boot?
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Aug 7, 2010
I am running a dual-boot of Ubuntu 10.04 and Windows 7. My current setup uses EasyBCD to pick between Ubuntu and windows. If I pick Ubuntu, it then fires up GRUB, which then goes to Ubuntu. My question is: Can I skip GRUB altogether in the boot process? I rather suspect that it's slowing things down a lot. I've set the GRUB default OS timeout to 0, but it still boots slowly, which annoys me. way to skip GRUB entirely and use only EasyBCD for both OSes?
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Aug 16, 2010
I have a T61 with Windows 7 and Ubuntu on it and it works great. I also have a HP Mini 5102 with Windows 7 on it. I deleted the HP_RECOVERY partition and merged with my Windows partition because you can only have four partitions. I got Ubuntu Netbook Remix on a thumb drive and I installed it by telling it I want to pick between them at boot up. However, when I boot up my netbook it just goes right into Windows, no Grub. Here is what my fdisk -l looks like.
[Code]....
how I can get Grub running on this thing would be great.
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