Ubuntu Installation :: Updated To 11.04 - Lost Dual-boot

May 2, 2011

Hey, yesterday I decided to update from 10.10 to 11.04.

I was using Windows Vista in dual-boot with Ubuntu but after updating Ubuntu to 11.04 I lost my dual-boot menu. It worked without problems before update. Now it starts automatically to Ubuntu log in screen.

I've tried so far:

1. Updating GRUB via terminal
2. Looked at my menu entries

Code:
grep menuentry /boot/grub/grub.cfg
menuentry 'Ubuntu, Linux-ydin 2.6.38-8-generic' --class ubuntu --class gnu-linux --class gnu --class os {

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Ubuntu Installation :: Lost Dual Boot With 10.04 And Windows 7

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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May 3, 2011

I was using dual boot (windows 7 and ubuntu 10.10) and it was going well. Couple of days ago I updated to Ubuntu 11.04 and everything was OK. Yesterday I cought some virus in windows, installed Microsoft security essentials which asked to update Windows. After update, dual boot is gone. It boots to windows directly with no option to choose between OS.

Quote:

Boot Info Script 0.55 dated February 15th, 2010
============================= Boot Info Summary: ==============================
=> Windows is installed in the MBR of /dev/sda
sda1: __________________________________________________ _______________________
File system: ntfs

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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

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Jul 8, 2010

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I can still boot into ""-22 fine and keep using ubuntu.

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Because it goes straight into the black screen after GRUB I have no way of telling what has happened without error messages. Would this appear in any log files and if so which ones?

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i have lucid lnyx installed as my main system and added natty on a seperate drive. after installing, the new grub detected lynx & i was able to boot into each without any problem. after doing some tweaking on natty (changed run level), it didn't boot properly so i reverted to the old config via rescue disk. after rebooting, the old grub menu didn't show & it loaded lynx automatically.

i tried the suggestion from another post changed the hidden menu and updated grub but it didn't detect natty (below).

------ update-grub ------
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-2.6.32-31-generic
Found initrd image: /boot/initrd.img-2.6.32-31-generic
Found linux image: /boot/vmlinuz-2.6.32-30-generic

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I have 10.10 installed idk if this will help but here # RESULTS.txt

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Aug 7, 2010

lost all sound on flash after firefox updated (or shortly thereafter)

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Oct 11, 2010

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1. ctrl-alt-f1

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tl;dr : 1. How to make it automatically boot to the gdm/desktop after I updated my gpu driver

2. How to fix the resolution for HDMI from my gpu to my TV. (DVI works fine

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Jun 5, 2010

I am quite experienced user of Ubuntu desktop / server distributions. Recently my desktop 9.10 disk failed and I decided to reinstall using 10.04. My configuration is a dual disk dual bot system. I have XP Pro SP3 on one disk and Ubuntu 10.04 on second. XP has own, untached MBR ubuntu got Grub 2 installed on the same disk as Ubuntu. Ubuntu disk is booting first in BIOS. Grub 2 detected both system, however I can boot only to Ubuntu. When I am trying to boot XP I got black screen only. Looks like booting is stack in BIOS stage, because crt+alt+del reset system.

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Dec 30, 2010

I have a (slightly complicated) dual/multi boot system.

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Code:
Serious errors were found while checking the disk drive for /boot

If I switch off and restart, ubuntu will then start without issue.

My setup is like this ....3 disks, one with 10.10 clean install - so Grub2, separate partitions for /, /boot and /home, one with windows 7, one with windows XP and 10.04 wubi (this is my old disk which I will trash once I'm happy with my upgrade to 10.10 & 7 on separate disks.

I installed 7 and 10.10 with ONLY their disks installed. After both were working, I added all disks and rejigged the grub2 menu (using update-grub and StartUp-Manager).

This problem only seems to occur if my previous boot was not 10.10 ( I will investigate this further). It's as if something (grub2 ?, the bios ?) is remembering part of the previous boot and not using the grub2 menu completely.

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Since then, Ubuntu has become updated to 10.04, which I now cannot install.

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I have Ubuntu 10.04 LTS and Windows XP installed on my laptop. Usually when booting, I get the GRUB 2 menu and I can boot into either Ubuntu or XP.I was playing around with EasyBCD, then after trying to remove it I was unable to boot into Windows, I used a Windows 2000 CD recovery console to fix the MBR (using: fixboot and fixmbr).Now Windows starts up when I power on, but I don't get the grub menu anymore with an Ubuntu option. If I boot from the Ubuntu Live CD and try to mount my Ubuntu partition (/dev/sda5) I get this error:

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In some cases useful info is found in syslog - try

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