Ubuntu :: Dual Boot - Changing Boot Loader Between Disks?
Jun 17, 2010
Here's my current setup:
Disk 0 (500GB): Windows Vista
Disk 1 (1TB): Windows 7
Disk 2 (160GB): Ubuntu
My boot disk is Disk 0. Currently when I turn on the PC, GRUB loads from Disk 0. I can then choose either Ubuntu or Windows Loader. If I choose Windows Loader (also located on Disk 0), I can choose to load Windows Vista or Windows 7. I like this setup, but I would like to move the loaders (exactly as they are) to Disk 1 so that I can format Disk 0.
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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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Apr 26, 2011
One thing I notice and hope someone here can steer me in the right direction. When I start up my computer I have the list of options to choose from, if I choose to boot into Win 7 I am the presented again with another boot menu from windows. I would like to remove the Windows boot loader.
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Dec 16, 2010
This is the third time I try unsuccessfully to install Debian as a second OS on a hard drive. When it gets to the end of the installation process the installer asks whether I want to go ahead with the Grub Boot Loader, I choose yes. The end result is however that I can't boot that partition within the hard drive -- i.e., Debian. Can someone tell me what is going on? Should I not use the Grub Boot Loader when I have more than one operating system on a machine? Should I not install Grub on the Master Boot Record (MBR)?
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Jun 14, 2010
I installed ubuntu using wubi and then I tried installing grub 2 but it failed. I need a way to reinstall the mbr sp it will load the windows 7 loader from the first partition.
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Mar 23, 2010
I had a dual boot machine with fedora 12 and windows vista and I could use grub boot-loader to switch between two. Few days ago windows got corrupt and I have to reinstall it. I put windows 7 now and as usual it erased grub. So to reinstall I put the fedora 12 installation CD on and followed some usual setup steps. When I got the command line I issued the command "grub-install /dev/sda" (sda not hda because It showed bunch of sda, sda1..) but surprisingly it said grub command not found. I remember doing it before while it worked fine.
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Feb 12, 2010
I've installed Windows 7 onto one hard drive, and then installed Ubuntu 9.10 onto a second hard drive. The installations seemed to go fine, and I can boot into Ubuntu from the GRUB menu. However when I try to boot into Windows from the GRUB menu, I get a message saying "error: no such device: 446e94786e946488".
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Mar 21, 2010
I have Windows 7 on my machine right now but want to dual boot with either Ubuntu or another Win OS.....is there a way to dual boot with ubuntu and keep my windows boot loader or do I need to have grub?
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Mar 15, 2011
I install windows XP and then unix centos. But again when I reinstall Windows xp then my unix centos not shows in boot menu. It automatically goes in windows xp. Now how can I recover my Unix centos.
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Jul 7, 2010
I recently tried installing Lucid x86 on my system beside Windows 7 and managed to screw it up.
My disk setup is this;
Disk A = 3 partitions (1st partition=Windows 2&3 partitions=Data)
Disk B = 1 partition
Disk C = 3 partitions (1st partition=Data 2&3 partitions=Ubuntu & Swap)
Disk A = SATA and internal
Disk B = SATA to USB external
Disk C = SATA to USB external
I want to install Lucid on the 2nd partition on Disk C. And dual boot it with Windows on Disk A.
During Lucid setup i specified the partition for installation (C2) and asked for GRUB to install on Disk A (no partition specified) so GRUB is always used as the dual-boot manager even if the Lucid disk (Disk C) is ejected. Once installed and rebooted i was taken to the GRUB rescue prompt as no installation drive could be found (a long string of numbers (looked like a Disk ID number???) was also shown). Obvviiusly, i could not access either OS on my system at this point. I had my W7 DVD handy so it was just a case of recovering the windows boot manager and i could use my PC but how do i go about installing Lucid with this setup? Should i specify a partition for GRUB to install to? I have a hunch this is where i am going wrong but am too scared to try again and potentially balls things up.
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Jul 22, 2010
I need to install linux (with Grub) un a disk with windows 7 loader (i have 2x choice on that loader and i need to use it).
I tried to dig to find out some methods but nothing.
It's safe? It's better to install Grub on another partition - same physical disk?
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Nov 19, 2010
had a dual boot system with openSuse 11.1 and Windows XP working OK - Linux boot loader was where OS selection was made (openSuse was installed after Windows) Last week I had to reinstall Windows and this removed the Linux loader from MBR and Windows booted automatically. I wanted the Linux boot loader back,checked the threads about boot loader restoration and did the following:
- downloaded Knoppix 6.2.1 ISO and burned to CD
- booted with CD
- opened terminal with root privileges and typed:
grub (ENTER)
grub> find /boot/grub/stage1 (ENTER)
> (hd0,2)
grub> root (hd0,2) (ENTER)
>Filesystem type is ext2fs, partition type 0x83
grub> setup (hd0) (ENTER)
setup was successful (no error messages)
Now when booting, i have an error that root (0,3) can not be mounted and "Press any key to continue"??? When hitting any key I see that there is GRUB there with all entries as in original state (Suse 11.1 and Windows) but only Windows can be booted. Then I downloaded live eval of openSuse 11.1 and did the same (booted from CD and run same commands from terminal as root) - again no errors but still "root (0,3)" can not be mounted..
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Aug 9, 2010
Installing upgrade from Open SuSe 10.3 to 11.3. I did it on a 32-bit laptop, aborted half way through and couldn't get back on because GRUB loader was corrupted. No problem as there are lots of 32-bit GRUB loaders available for download, install was successful 2nd time. I need to do the same for a desktop x64bit dual core Intel. Can't find a x64bit GRUB loader on internet - how do I extract from my current set-up an emergency GRUB-loader CD?
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Aug 31, 2010
Using 9.10 in dual-boot with XP:
Dell 600SC running an Adaptec 39160 dual channel SCSI controller which has 2 disks connected to it. The machine also has 2 IDE drives connected to it. The boot order of the disks is set to the SCSI disks as the first in boot order (after CD).
I am trying to set it to maximize performance from the SCSI config so I have XP on the first SCSI and I set up Ub 9.1 on the second SCSI in a dual-boot configuration.
In this set up the machine when rebooting goes straight to XP (on the first SCSI) and does not even see the Ub installation. The installation went fine and no complaints. On the same machine if I just had Ub on the first SCSI - machine boots fine (albeit after a long pause looking for the bootloader).
So with XP on the first disk (which I need to - to have XP) the Ub bootloader does not seem to set the right params to be able to boot.
Again this is with 9.1. Not trying 10.04 as with 10.04 I don't even get to boot even with standalone Ub (with no XP). However it installs fine but does not find bootloader in 10.4, so we will keep to the 9.1 for now. I am however open to working with 10.04 if there is a solution in dual-boot with XP in my config.
So again 9.1 installs fine with XP on 1st SCSI disk, an ub 9.1 on 2nd SCSI disk, but then bootloader does not get activated and machine goes straight to XP.
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Mar 3, 2011
I currently have xp installed on the 1st partition and Ubuntu installed on the 2nd.Both partitions are on the same drive.(Being the 1st drive)I have just purchased a new case and some other components and wish to take the opportunity to change my current setup so that xp is on the 1st drive (alone) and Ubuntu on the 2nd drive (alone) Using clonezilla, I take a backup of each partition separately.I then copy back the xp partition to the 1st disk. I then copy back the Ubuntu partition to the 2nd disk.I gather at his point i run the live Ubuntu cd, open a terminal and run sudo update-grub.
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Mar 17, 2009
I have 2 screens connected to my nVidia 8400GS and would like to change my video card settings so that the system boot shows in the Digital screen and not in the Analog one.
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Mar 9, 2010
is it possible to use a Windows-based recovery partition on a dual-boot computer to overwrite the Ubuntu partition and remove the GRUB loader? For instance, if you booted up your computer, accessed the hidden recovery partition and used it to reset the computer to it's factory default settings, would that effectively remove the Ubuntu partition and the GRUB loader? Would a completely new installation of Windows overwrite/uninstall Ubuntu and GRUB automatically?
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Mar 31, 2010
I have/had a PC with several hard drives, and a mix of ubuntu and windows on multi boot.The old boot drive died screaming, and I need to start again. (But my data is safe! yay!)
Is there anything special about which drive can be the main drive to start booting from? Or to put it another way, can I install to any of the other 3 and expect it to work, or do I need to switch them around so a different drive is on the connections for the recently dead one?
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Jul 28, 2010
I have 2 HDDs:
HDD 1 (sda) with Windows XP installed on sda1 and four more partions.
HDD 2 (sdb) with three NTFS-Partitions (sdb1, 5 and 6) and Ubuntu 10.04 (sdb7) + Swap-Partition (sdb8).
I would like to boot Ubuntu using the Windows XP boot loader, i.e., having an entry there to choose Ubuntu and start my installation of Ubuntu 10.04. I have installed Ubuntu 10.04 on sdb7 and told the installer to install the grub2 boot loader to /dev/sdb (should it have been /dev/sdb7?). When using the boot selection option of my bios and choosing the second HDD Ubuntu starts without problems.
I used dd if=/dev/sdb of=bootsect.lnx bs=512 count=1 to copy the mbr of my second HDD and copied the file bootsect.lnx to my c: drive. Then added C:ootsect.lnk = "Ubuntu Linux" to my Windows boot.ini. When rebooting my computer I get the option "Ubuntu Linux" in the XP boot loader. Choosing it I come to a black screen with a blinking white cursor. All I want to do is not use Grub 2 as my primary boot loader but instead leave my WinXP installation untouched and start Ubuntu from within WinXP boot loader. This has been working just fine with my old Ubuntu installation.
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Nov 1, 2010
I'm trying out puppy linux, as I have an old system, and the new Ubuntus do not work on it.
Anyway,I cannot boot from my hard drive but only from the floppy.I'm just not too keen on always booting from the floppy.
Here is the Menu.ls file:
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Oct 23, 2009
I have XP, Win7 Pro and F 11 installed. Before I installed F 11, Win 7 boot mgr was working fine. I then installed F 11 and I went to System/Admin/bootloader to edit it and it wouldn't bring up the boot loader. In the attachment was the error msg. Now my only option when I boot up is F 11.
I do not have access to the Win 7 DVD only the F 11 install disk since I am on a fishing trip and need to use Win 7. How can I repair to the grub boot loader to boot into Win 7?
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Mar 18, 2010
I'm trying to install Fedora onto a computer that has Windows XP on the first of two SATA drives. Windows 7 is on the second drive.
I installed Fedora no problems on a 14 gig free space I created on the first drive and told it where and what my other OS's were. Fine so far. I didn't tell it to overwrite the MBR on the XP (first) drive. I took the second option which I "think" put the boot loader on the fedora partition.
All good - till I rebooted and I just saw my Windows 7 loader with my options for XP and Windows 7 but no Fedora.
So, if I overwrite the MBR on the first drive, will that mean I can't access my Windows 7 installation?
How SHOULD I set up the boot loader?
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Feb 26, 2011
I can't boot to the grub boot loader now. It only boots into the grub command prompt. What should i do?I understand grub is the bootloader but I don't know what else to call the command prompt
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Mar 2, 2011
i have a dual boot system running Fedora14 as the main OS and WinXp as a secondary OS. On the boot up screen i choose to boot windows XP and all i get is a black screen. i am assuming the boot-loader has a small glitch and won't boot WinXp. i am stressing because i need to use MS office Access to finish a crappy school project due tomorrow.
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May 19, 2011
I just did a fresh install of 11.4 and I LOVE IT!!! One of the little issues I am having though, is that there is no login screen. No matter what settings I change it still auto-logs me in.
I am using GRUB and the Boot Loader Location has both "Boot from MBR" and "Boot from Root Partition". Is this right? I would think that I should just boot from the MBR.
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Apr 18, 2010
I am trying to streamline my boot screen/GRUB Menu. I know what I want it to look like (grub_wanted.jpg), and I think I know how to get it by uninstalling a couple of things, (synaptic.jpg). Now I have too many items on the screen, and it looks cluttered to me (grub.jpg).
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Mar 29, 2011
i want to install opensuse on my new lap top i partition my hard (600gb) with 5 parts:
c: 97 gb
d: 150 gb
e: 150 gb
f: 100 gb
g: 50 gb
and 38 gb unlocated part
in opensuse instalation , the yast makes a 2gb for swap 14gb = root , 21 gb = home, but in Instalation Overview under Booting has a red error: the Boot loader Installed On a Partition that does not Lie Entirely Blew 128 GB .The system maight Not Boot;
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Aug 11, 2010
I am trying to install ubuntu 10.04 on windows7.windows 7 was already installed.I ollowed these steps to install ubuntu 10.04.1)First i made some freespace in hard disk to install ubuntu using windows7 default options(By shrinking).2)I used USB drive to install ubuntu.I made it bootable using unetbootin.3)I followed normal steps install(language,area,keyboard,using manual partition i installed ubuntu in free space,etc).4)I got boot menu when it restarted.PROBLEM isAs long i use only ubuntu (boot into ubuntu --shutdown--boot into ubuntu --shutdown) it works well.
If once i boot into windows 7 and restart the system i am loosing boot menu options.The following error i am getting"no module name found Aborted.Press any key to exit".If i press any key,I guess its trying boot using internet and lastly it says Operating system not found and hangs.
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Jan 18, 2010
Have just installed 9.10, again, many failed attempts previously.Cannot get to boot up and show menu on dual boot with Vista initially,However when I delete the grubenv file the system boots ok and works fine.But does not show the grub menu to choose boot up choices.Got the information to delete the file on some posts elsewhere about booting problem, and tried a longshot and got into Ubuntu for the first time from trying to install now for 3 months!The problem is the file grubenv is created each time so on subsequent boot ups the sytem fails to boot again.The Grub version is 1.97 beta 4, most up to date for Karmic I think, I have seen a version 1.98 but dont think its for Karmic?
Is there a way to modify the grub.cfg file to stop this problem ( all posts say dont touch this file??Or install a script to delete the grubenv file on shutdown as a workaround for me, (I have no idea how to do this whatsoever, I'm not familiar with linux at all)I did read that this problem was fixed/patched in Grub version 2, but dosn't seem.so on my system afetr I updated it when I got into Ubuntu.I couldnt find the patch or fix, I got the information I am on about from this post:URL...It seems to say it was fixed or patched by Colin Watson reading through, but I don't really understand whats being said or how to get the patch on my system if indeed there is one?Sorry for being a bit thick about all this, its a bit beyond my brain now, hope somebody can help out as I have enjoyed my brief bit of fun in Ubuntu.
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Jul 8, 2010
I have a netbook running Windows XP as standard. There is also a recovery partition which came from the factory.
In the past I installed Ubuntu (I think 9.something) from USB key and all worked fine. However my XP became corrupted and I needed to do a repair on it. After this, Ubuntu became removed from the boot select menu.
Since then, Ubuntu has become updated to 10.04, which I now cannot install.
The Live CD tells me there is a "file IO error" and simply stops installation at around 70%.
I did manage to get into Ubuntu from a Live USB using Wubi. However when I chose to install Ubuntu to a Harddrive, the option to "install side by side" was missing.
After reading on the forums, I did a chkdsk /f on Windows and tried again. Now my liveUSB does not show a boot menu!
When I select to boot from USB stick, the screen goes blank with a flashing cursor. Ctrl+alt+dlt reboots.
I'm really lost here! It seems when I fix one problem, another problem arises!
Also when trying to instal Ubuntu within Windows, the process goes through to 100% and asks me to reboot. When I do so, the option for Ubuntu does show in the boot menu. However when I select it, I get an error "Windows boot failed: file wubildr.mbr and status: 0xc00000f - something is corrupt".
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