Ubuntu :: Upgraded Windows Dual Boot/lucid-lost Grub2?
May 8, 2011
i had a dual boot with xp and lucid lynx, then upgraded the xp to win7. windows commonly overwrites grub with it's bootloader. and so it did. now i can't access my lucid OS. i need to get grub back (i need to get lucid back).
here's my fdisk:
ubuntu@ubuntu:~$ sudo fdisk -l
Disk /dev/sda: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
[Code]...
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Jul 20, 2011
Dual boot PC, boot disk and WIN XP are on good disk, Ubuntu was installed on failed disk. (I prefer separate disks for each OS).
I know I will need to reinstall Ubuntu later, and of course, GRUB2 now crashes without the Ubuntu disk.
Confirm that the only thing I need to do when I get the new drive installed and partitioned is to boot my XP disk in Recovery Mode and type "fixmbr", (then reboot to confirm clean WIN operation on the existing disk) then install Ubuntu as normal on the new disk.
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Nov 3, 2010
I upgraded from Ubuntu Desktop 10.04 to Ubuntu Studio 10.04 and running a dual boot system with Windows. On the grub screen there are four listings now for Ubuntu. Two recover modes and two ubuntu modes. Is this normal? Going to reboot and see if I can get a picture of it.
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May 12, 2010
I recently installed Ubuntu 10.04 on my dual boot system and noticed that my boot options were changed. I typically have Windows XP as the default OS. Here are the steps that worked for me to get Windows XP as the default boot using Grub2.During my initial Window XP install I had partitioned my hard drive into 3 partitions:
Code:
Partition 1: NTFS format (Windows XP installation) in Linux it is called /dev/sda1
Partition 2: NTFS format (Data for Windows XP) in Linux is is called /dev/sda5
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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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Apr 6, 2011
How can I get my dual boot working again? I had a dual boot with Ubuntu 10.04 and windows 7. It was all well tweaked but I was annoyed with the ugly boot menue with old kernells so I decided to install BURG loader and remove some of the old kernells. So I did and after that I have not been able to reach my Ubuntu boot.
After multiple attempt to restore the old kernells and reinstall grub (through a USB live stick) i couldnt log in to either system (following the steps in this support thread [URL] Finally i mamanged to get my windows 7 working but my boot menue only shows memtest and windows 7 (not Ubuntu). I am affraid to tamper around to much and having a non funtional lap-top in the end. My lap-top still "miss" 40 GB that was set aside for the Ubuntu boot.
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Apr 26, 2010
I've just installed the 64 bit edition of 9.10 on my workstation. My raid drivers worked without any custom installation, which is very impressive! I am however having a problem installing grub2. I boot to the live CD, run the install process, resize and partition my free space as an ext4 primary partition with mount point /. Everything installs except grub, so I'm always booting in to windows.This seems to be a bit off as I've never had this occur with dual booting before.
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Apr 30, 2010
After upgrading to 10.04 from 9.10 Win7 wouldn't startup any more. So I tried this HowTo: [URL] to restore Grub2. But now each time I boot up I get this two lines: error file not found grub rescue> I have NO idea what to do.
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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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Jun 10, 2010
I have a dual boot system with Lucid Lynx and a Windows 7 that came with the laptop (it's a Dell Studio with an i3 processor).
Grub2 boots into Win7 and Ubuntu just fine. The thing is that if I choose Win7, next time Grub doesn't show up. I can't boot anything and the screen turns black. I can reinstall grub2 with Ubuntu's live CD and the cycle starts all over again, it's very annoying.
These facts may or may not be important: I think that this started happening when I uninstalled wubi after being able to install ubuntu through another method When reinstalling grub there's an error that repeats through many lines of the terminal (I can't remember what it says, if you think it's important I can check). Anyway, it ends up saying the installation finished successfully.
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Jan 16, 2010
I have both 9.04 & 9.10 installed & running with a dual-boot...now I want to remove 9.04 and go to a single-boot of 9.10...how do I do this? I want to reclaim my disk space from the old OS as well...to make matters alittle messier, 9.10 was installed first...then after encountering trouble I installed 9.04 to see if it solved my problem...when I figured out how to solve problem it worked same on both releases...so I now want to remove 9.04 and stay with 9.10...but I don't want the uninstall of 9.04 to impact the 9.10 install...I would also like to adjust the partitions so that I can use all of the disk for 9.10 (including that which was used for 9.04 and it's swap file)..
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May 14, 2010
i upgraded ubuntu from 9.10 (pretty sure it was .10...) and now my machine goes through the bios and i get a black screen w/a blinking cursor instead a boot choice to ubuntu or windows 7. system worked fine prior to upgrade... reading lots of things it appears i likely have a problem with grub2 (soemone correct me if i'm off base?) so i've been trying to restore and reinstall grub 2 (using this and silmilar threads: [URL]), got frustrated and reinstalled 10.04 over the upgrade install. same blinking cursor... i did the following from this thread: [URL]
[Code]...
i've gotten that response from trying to reinstall/repair grub 2 also. i'm near wit's end and am near completely wiping hdd and reloadng w7 OS.
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Apr 29, 2010
I upgraded today to 10.04, everything went fine and was working fine. I went to boot back into Vista via grub2. I immediatly get the PXE-E61 Media Test Failure, check cable PXE-M0F Exiting PXE ROM
I first checked my boot order, and lan is very last. Also, through Ubuntu I can view everything on the hard drive so it is not that. I think it may have to do with during the update process, it asked about grub2 update preferences and asked about different drives and such (I am not exactly sure what it was called). I didn't select all of the choices, and I believe this may be the cause, as this was the only thing I had control of that I could have screwed up.
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Feb 10, 2010
I recently got a netbook and setup as dual boot between win7 starter and 9.10 (64bit). Win 7 starter is not impressive so i want to nuke it and give the space all to my /USR partion. I am comfortable working with Gparted and assume that i can launch using my gparted live usb and delete the windows partion and then resize the /usr partion.
what changes do i need to make w/ Grub2? I would prefer not to see the Grub menu at all and have it load right the main kernel if possible. Also, if this is possible is there a way to get to the Grub menu during boot should i need to select a different kernel?
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Feb 15, 2010
After installing karmic with Grub2 I am unable to boot into Archlinux partition. Grub2 has removed the last line of the Archlinux boot stanza! It used to read:-
[Code]....
Following the Grub2 tutorials I have tried editing /etc/grub.d/40_custom as follows:-
[Code]....
But no luck. Only way into Archlinux is to get into the edit shell and manually add the missing line and remove other stuff not needed. I have spent hours trying to resolve this issue and I am fairly p----d off
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Mar 7, 2011
I apologize for this being somewhat vague but it happened several months ago and I don't currently have access to the laptop. But here goes anyway:Perfectly working dual-boot system with XP and Ubuntu 8.04. I also think I had installed a different boot loader (or maybe just a GRUB editor?). This was several years ago. I upgraded Ubuntu to 10.04 and I remember it asking me if I wanted to overwrite probably menu.lst. I said no when I should have said yes and now XP still loads fine but neither version of Ubuntu will load at all. I wish I had access to the machine so I could say what the error message is, but I don't and I forget.So I expect that menu.lst is just pointing to the wrong place but I'm not sure how to fix it. Can I boot from a live CD and edit menu.lst? Just thought about that.No biggie but I cannot screw up the XP aspect since that's major drama.
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Jun 13, 2010
The Problem, installing ubuntu over top of windows and vice versa causes the windows boot menu to forget about ubuntu.The Solution:1. Using bcdedit from within windows to edit the boot menuClick Start -> Type Cmd.exe run it in elevated mode (as an administrator) by right clicking it and selecting "Run As Administrator" Inside the console type bcdedit, notice that the ubuntu boot entry is still there, for example i use three o/s , windows 7 professional x64, windows 7 ultimate x64 and Kubuntu and it looks like this
Windows Boot Manager
--------------------
identifier {bootmgr}
[code].....
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Jul 6, 2010
After a lot of updates yesterday I have found that Lucid will no longer boot, I just get a blank screen that has a cursor flashing in the top left corner. I can't boot into recovery mode to see what the issue(s) might be because I took that option out when I ran update-grub.My question is this, is there a way to run update-grub -either from a live-cd or grub-rescue mode- that would put the recovery boot option back in? I have already edited the /etc/default/grub file to comment out the field.
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Jun 8, 2010
I've already had WinXP SP3 installed on one HDD, so i've installed 10.04 on my spare HDD. When I try to boot to Win, I get ntoskrnl.exe missing error. This is my boot info script report:
Code:
Boot Info Script 0.55 dated February 15th, 2010
============================= Boot Info Summary: ==============================
=> Windows is installed in the MBR of /dev/sda
=> Windows is installed in the MBR of /dev/sdb
[code]....
I've tried with different boot orders in bios, reinstalling Grub2 (several times ), I've even tried to install lilo through software center but didn't know how to configure it ...
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May 16, 2010
I'm at my wit's end with Windows this morning. I upgraded to Lucid a few days ago. Everything went very smoothly. Then I spent the greater part of Friday and Saturday "upgrading" to Windows 7 from Vista. I chose the "update" option which was only supposed to update to 7 rather than overwrite the entire HD. Now, GRUB doesn't load and I don't see my Linux partition. HOWEVER, it appears as though the partitions are still there! When I look in Winbloze at the HDs, it shows the Windoze HD as the partition size I made it when installing Ubuntu.
Any ideas on how to recover the awesomeness that is Ubuntu from this situation? Or do I need to install it fresh?
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Nov 23, 2010
Been using Linux for many many years but Grub2 is annoying the heck out of me at the moment.
My home desktop PC is set up as follows:
/dev/sda � 40GB 10k Raptor with Ubuntu 10.10 installed
/dev/sdb � 500GB HDD formatted to ext4
/dev/sdc � 500GB HDD split up as follows:
/dev/sdc1 � 80gb NTFS partition with Win7 installed
/dev/sdc1 � Remaining drive space NTFS but nothing on it yet
Grub2 refuses to detect that Windows is installed on the 3rd HDD. I've googled and spent hours trying all sorts of things to get it to detect it and add it to my boot menu.
If I disconnect all drives except the Windows drive it boots up straight into Win7, so it's healthy and happy. (as healthy and happy as Windows can be, I need it for work purposes only!)
Does anyone have any tips on what would be the best method to force grub to realise that Windows is sitting there?
As far as I understand, the Win7 partition should be (hd2,1) � does that sound right to you?
I haven't tried booting off an Ubuntu CD and re-installing grub, since I can get into Linux and all the guides seem to be about how to restore grub after a Windows install eats it...
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May 22, 2011
Today I attempted to install Win 7 on my Ubuntu 11.04 machine so I could dual boot. The Win 7b install went smoothly, but when I tried to fix grub everything went to hell.
I initially tried to reinstall grub using this walk though [URL] However, when I start the computer I get:
"GNU GRUB version 1.99~rc1-13ubuntu3
Minimal BASH-like line editing is supported....
grub> "
I tried to use the technique in [URL] to solve the problems, but when I try to run chroot I get a bin/bash error (I don't have the full error handy, but can rerun the steps if needed). The only potential cause that I can find doesn't apply to me since I am using a 11.04 64 bit live usb on a 11.04 64 bit install.
I've run [URL] and included the results below.
[Code]....
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Feb 17, 2011
I have read that installing ubuntu 10.10 will inevitably install grub2 with it(unless you use flash drive workaround). i am wondering how slackware 13.1 reacts to grub2.
Does it go on like nothings changed (if configured correctly)? Or does it freak out and have a fit? If slackware doesn't play nice with grub2. i don't think i will use ubuntu 10.10.
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Nov 26, 2010
I'm thinking of dual-booting Ubuntu 10.10 and Arch Linux. It seems that I'll have to do some editing of the grub.cfg file, but I have seen numerous warnings not to do so. After a bit of poking around, I've heard about a script that does the editing for you built in to Linux (or maybe just Ubuntu).
My questions are:
- If the aforementioned script does exist, how do I use it?
- else if it doesn't exist, how do I not directly edit grub.cfg?
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Dec 26, 2010
I deleted 2 ubuntu partitions using Vista's manager, and expanded the unallocated space in to the Vista partition. when I restarted a screen came up saying error: no such partition grub rescue> Is there any way I can fix this ( by deleting grub, or something...)
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Jan 4, 2010
I was running a dual boot Ubuntu 9.10/Windows XP. I reformatted just the windows partition and re-installed it, and now I don't get the option at boot time of what OS I'd like to use...it just boots straight into Windows.
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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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May 7, 2010
I have a Dell Studio 14 laptop with Windows 7 64bit preinstalled. The processor is core i5 and the machine has 4GB RAM. I freed 25GB of memory from my Hard disk and tried to install Ubuntu 10.04 (AMD). Everything went fine. I restarted and Logged into Ubuntu. It worked like a charm. Then I restarted to Windows7. This also worked well as expected.
But, when I rebooted again, I got a black screen saying that �No modules found. Press any key to restart�
When I press a key, it says �No operating system found�, probably after checking through a network (it printed lines starting with PXE).
I tried exactly in the same way with Ubuntu 8.04 in my machine, and this worked without any problem. The Bootloader was not corrupted after restarting from Windows. I noticed the problem with Ubuntu 9.10 and 10.04. I feel like a problem regarding the bootloader version. AFAIK, 9.10 and 10.04 is using GRUB2 when 8.04 use the old version of GRUB. Will I have to switch to the legacy GRUB? (I would love to keep using GRUB2). If yes, I would like to know How.
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May 11, 2010
I have a Dell ZINO HD and dual booted fine prior to 10.04. Grubs seems to not identify the Win7 OS partition correctly. According to Disk utility DEV/SDA1 is a DELL utility partition, DEV/SDA2 is the RECOVERY partition, DEV/SDA3 is my Win7 OS partition...and DEV/SDA5 is my Linux partition. Ubuntu boots fine... but with GRUB using SDA2 (HD0,2) for win7 I cannot boot to it... is there a fix?
The following is in my GRUB.CFG file
### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Windows 7 (loader) (on /dev/sda2)" {
[code]....
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