Ubuntu :: GRUB2 Overwritten - Boot Into Windows Via TC Bootloader But "no Bootable Partition Found"?
Sep 11, 2010
I'm using Truecrypt to encrypt my Windows 7 OS. I also have unencrypted Ubuntu 10.04 installed on /dev/sda6 on the same hard drive. Since Truecrypt bootloader must be installed in MBR, I have GRUB2 installed on /dev/sda6, so I can use TC bootloader to load GRUB2. When I first install GRUB2 on /dev/sda6, I can use TC bootloader to load Ubuntu. But, if I boot into Windows via TC bootloader, and then later try to boot into Ubuntu, I get the message "no bootable partition found". I have to reinstall GRUB2 onto /dev/sda6, every time after I use windows in order to be able to boot into Ubuntu. It seems that starting Windows somehow overwrites GRUB2. Is there a fix for this?
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Jan 9, 2011
I have a Windows Vista-Ubuntu 11.04 dual-boot. However, I have lost the ability to boot Windows Vista. I can select Windows in the GRUB menu, but GRUB says
Quote:
error: symbol not found: 'grub_err_printed_errors'
I have repeatedly searched Google for any help, but have found nothing that applies to my situation. I need Windows because I have an iPod Touch with a tethered jailbreak and can't use it right now.
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Sep 29, 2010
I have been having problems hibernating my windows 7 partition recently. It happened approximately right after I set up the dual boot.
I have found other topics where it says to make sure that the windows 7 partition is marked as the active partition. I have since done so and it has not changed anything. I did it with Partition Magic on Windows. I did find it suspicious though that my Dell Recovery partition is labeled as boot while the Windows one is marked as Active and System.
However when I looked at it using disk utility in Ubuntu the windows 7 partition is marked as Bootable while the recovery partition is not.
Hibernation works on Ubuntu with a couple error messages while shutting down and some weird screen issues while booting up. But it ends up working decently.
Under Disk Utility the Ubuntu Partition is not marked as Bootable. Should it be?
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Apr 8, 2011
I've installed CentOS 5.5 64-bit on an external WD 500GB HDD. I went through the installation setup, and formatted the external HDD normally. (100M /boot, 250GB /, 248GB /tmp , 2.8GB swap). I also installed grub in the external HDD's MBR. After installation, I could boot up Linux on the same platform (Arrandale). However, as soon as I took it to a different platform such as Atom Pineview D525, it had all kind of problem on Grub, such as Grub Hard Disk Error, or it just hanged on grub loading stage {1.5,2}. Sometimes, if I'm lucky, I would get to grub command prompt, but rarely I could boot up. I would stuck at mounting file system.
I've searching a lot on Google, and people suggested to reinstall Grub, so I tried various method to reinstall Grub, but the same behaviors still exist. I can't guarantee the drive will boot...
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Jul 19, 2010
I'm relatively new to Ubuntu, I've installed it in Virtual Box and through Wubi on other computers but this was the first time that I've done a live install on my production computer. I had problems from the get go, I was using a Live CD of 10.04 (64 bit AMD) to install it and when it got to the part about choosing a partition no drives would show up at all. Eventually after some searching around, I discovered that Using an Alternate install CD would work. I did that, installing Ubuntu into one of the free partitions I had set up prior to this. Eventually my system turned on but the monitor went to sleep so I had to hit E on the grubmenu and change something to nomodeset (or something like that) so that I could see the screen. I installed Compiz and it was all good from there.
Except for One issue, I cannot boot Into windows at all, it doesn't show up on the bootloader even though the partition shows up in Gparted. I've tried updating Grub2 with no results, here are the results of Sudo fdisk -l
Disk /dev/sda: 400.1 GB, 400088457216 bytes
255 heads, 63 sectors/track, 48641 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
Disk identifier: 0x1549f232 .....
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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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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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Apr 24, 2010
Everything is installed and setup on my system, but when I setup my partitions I chose my Windows partition to be bootable. Can I just use cfdisk to toggle the bootable flag so my linux partition is bootable and rewrite the partition table?
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Jul 18, 2010
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:
mount: wrong fs type, bad option, bad superblock on /dev/sda5,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
[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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Jul 28, 2011
I am using Ubuntu 11.04 on my sisters computer which I am borrowing until my laptop gets fixed by Dell *sigh*
The only catch was that I had to remove the virus thats been plaguing this computer any means necessary my plan was to delete the windows 7 partition and put Ubuntu in its place temporarily.
My sister didn't have the Windows 7 DVD that was given to her *sigh again* but she did still have the key labeled on the side of the machine. So my plan than included to download that .iso of Windows 7, and then use setup.exe.
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Aug 30, 2010
I recently installed Ubuntu Netbook Remix (10.04) on my brother's Acer Aspire One (751h) netbook, set up to dual boot with XP Professional. The initial install was successful, with both OS's booting correctly. However, after a series of updates and module builds (this machine has the Poulsbo chipset, still somewhat of a mess), Grub2 is now unable to boot XP, displaying the error "Operating system not found."
To be clear, grub works properly (aside from not booting XP), so the MBR is intact, although I've rerun grub-install to be safe. Restoring the windows MBR (using testdisk) boots XP happily, but of course ignores the ubuntu installation. I also had testdisk rebuild the NTFS boot sector, to no change - grub still doesn't work, the windows MBR does. Using the grub console, I can "root (hd0,1)" and see files on the XP partition, but "chainloader +1; boot" again fails with the same error. The ubuntu install can likewise mount the NTFS partition with no problems.
Given the fact that switching the MBR fixes the issue, I'm suspecting a Grub2 configuration problem. However, the simplicity of "root (hd0,1); chainloader +1; boot" leaves me stumped as to what that could be. Also, the error text "Operating system not found" is suspiciously identical to my BIOS's error message when attempting to boot from a non-bootable medium (as I found out while attempting to make a bootable usb stick with my mac).
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Mar 12, 2011
I'm trying to install opensuse 11.4 but I got this error:
"The bootloader is installed on a partition that does not lie entierly below 128 gb. The system might not boot if BIOS support only lba24(result is error 18 during install grub MBR)"
What should I do before click next step to install? I installed opensuse with this error and some times opensuse can boot and some not. At least I was able to boot safemode.
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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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Jul 21, 2010
I installed openSUSE 11.3 on my iMac along with "Mac Snow Leopard, Windows 7" to make it a "Triple Boot". But after installing the "GRUB/LILO", it does not chain with the boot loader "REFIT" that I use. Each time I try to boot into "Windows/openSUSE", it shows a message: no boot device found, insert boot disc". So why isn't the "GRUB/LILO" working?
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Jun 11, 2010
I had a dual boot on my dell mini inspiron for win xp and linux debian. Due to some issue with windows, I needed to reinstall it and remove debian. From within debian's inbuilt GParted, I deleted the partition containing windows, and now my system will not load any bootable CD (whether winXp or Gparted live cd). Everytime I restart the system with a bootable Cd, it still takes me into debian automatically.how to reformat my hard drive by deleting linux partitions and re-install winxp from bootable cd.
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Aug 14, 2010
I'm as big a fan of Linux as Linus Torvalds himself but it's things like this that help to keep Linux from becoming mainstream. I mean, how would I ever explain the need for the following procedure to a non-techie type, recent or prospective Ubuntu convert? The following is not a question, as I have finally resolved the issue but is more of a rant, I guess you could say. The reasons that I decided to post it are:
1) To hopefully help someone else experiencing this issue.
2) To point out the need for significant improvement in the area of editing partitions under Ubuntu Linux.
3) To vent my spleen.
[Code]...
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Jan 14, 2011
I just received a service pack update for Windows 7, and now when I boot Windows 7, it continuously restarts telling me its for the update. Is it possible that I have two boot loaders in the MBR? And if i do how can i delete the bootloader for windows 7?
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Mar 26, 2010
My evil nemesis Grub2 has decided to make a move on me again! So I rebooted a few minutes ago and got this:
Welcome to Grub
error the symbol 'grub_env_find' not found
Entering rescue mode
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Jan 5, 2011
I have a dual boot setup with Windows 7 and Ubuntu. Lately Windows 7 has been causing me all kinds of grief and I decided that it would be better to just restore it back to factory settings. I have a Windows 7 recovery partition (hidden) that I can see from Ubuntu, however Grub2 does not detect it. It only has two identical Windows entries that take me into Windows (though in /boot/grub/grub.cfg they point to hd0,msdos1 and hd0,msdos2 respectively).
I have searched far and wide on the Internet on how to gain access to this recovery partition to no avail. I even found a link from Lenovo's website that details how to do this in the old version of Grub, though it doesn't work in Grub2.
Here are the most useful links that I have found thus far, both fall short unfortunately. [URL]
I have already backed up all my data, so I can nuke the whole disk if that's what it takes, but I don't actually have a Windows Recovery CD, only the hidden partition which I can't seem to boot into.
I also saw some posts where people were having trouble disabling the recovery partitions from appearing in the Grub menu, their answers often consisted of people telling them that it's not possible to disable the recovery partition from appearing without hiding the main Windows Install, oh the irony!
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Oct 4, 2010
let me know the process to create Windows 2008 NTFS bootable partition from Linux?
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Dec 26, 2010
On my Samsung netbook, I have successfully got a pretty speedy dual-boot of Windows 7 Starter and Ubuntu 10.10
I set up Burg, to well, replace Grub2 in favour of a more attractive interface and so far so good. I know that I can hide the older Ubuntu kernels/recovery slots by pressing the 'F'key. However, the Windows recovery partition still shows up. So it looks like this:
Ubuntu - Windows 7 - Windows Recovery (vista)
Basically, how can I hide the Windows Recovery partition? If I ever do need to use it, I can access it alternatively by pressing F4 at boot.
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Jan 19, 2011
I am getting a new computer with Windows 7 installed. It will contain a second hard disk on which I will install Fedora Linux. I plan to put grub in the /boot partition of that disk,so I won't be able to boot Linux directly to start. I plan to use the Windows 7 bootloader to dual boot, and I understand in principle how this is done. I set up a previous computer which was running Vista this way, using the program Easy BCD which simplified setting up the Vista bootloader. But the Easy BCD website doesn't address the question of what to do with Windows 7.
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Sep 2, 2010
I have recently purchased a new laptop, which came with Windows 7 pre-installed. I immediately installed Ubuntu alongside it with a dual boot. At first it worked fine, but when I restarted after the first time I used Windows, I ended up with an 'Operating system not found' error. I was able to reinstall the Grub bootloader using an Ubuntu Live CD, which appeared to fix the problem, but the next time I loaded Windows 7 and rebooted, the problem reappeared I think the problem is that Windows 7, for whatever reason, is somehow removing or disabling Grub.
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Aug 30, 2011
I am currently running a dual boot machine with Ubuntu 11.04 and Windows Vista.Is there any way I can delete the Linux partition and Grub boot loader without affecting the Windows partition at all?I would also like to be able to repartition all of the space that was previously occupied by Linux.
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Sep 11, 2010
I have windows xp on my first hard drive and Linux on the second hard drive.The windows hard drive is labeled hda1 and the linux hard drive is labeled hdb1.I am using GRUB to boot the linux hard drive and it is installed on hdb.Is there any way to boot the secondary linux hard drive using the windows bootloader?I have tried several online tutorials for it but none of them work.
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Mar 14, 2011
I just installed CrunchBang Linux and it's great! But I can't boot into windows anymore. I'm sure it didn't delete my Windows partition-it's mounted. My linux partition is /dev/sda1 Windows is /dev/sda2
Code:
sudo update-grub
Found linux image: ....
Found initrd image: ....
Found linux image: ....
Found initrd image: ....
done
how I can get Windows to reappear? I've had bad luck with Grub in the past and I don't want to fight it on my own...
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Jul 27, 2010
Whenever I load Ubuntu on a machine with other OS(s) loaded it always recognizes and adds an entry in the bootloader menu. Not this time. Well kind of. After the install my windows boot option was in the menu, but after an update it is no more. I see the different Linux images... but no Windows boot option. Can someone tell me how to add my windows XP boot option back to the bootloader? I have XP on the the on the 5th partition and Ubuntu on the 6th...
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Sep 28, 2010
I installes Ubunu on my Windows XP pro FD and I need to rcover some files , What is the best way tto recover them?
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