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Thread: chainload GRUB2 from NTLDR

  1. #1
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    Question chainload GRUB2 from NTLDR MOSTLY SOLVED

    My internal is sda windows = sda1 recovery = sda2
    my external is sdb storage = sdb1 linux sdb2

    GRUB is on sdb2's first sector. I tried coping it to grub.mbr on sda1 and added C:\grub.mbr="ubuntu linux" all I get when selecting it is _ blinking and no booting. USB booting from BIOS works but I don't want family to have to mess with unplugging and replugging it when they want to boot to Windows. I also tried installing GRUB2 to MBR of sdb and copying same problem. Can anyone help? Please do not question the way I do it unless you need to know to help. It's the way that I want to do it if all you're going to do is complain about my set-up don't post.

    see post 13 for new question.
    Last edited by alienkid10; July 18th, 2010 at 09:01 PM.

  2. #2
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    Re: chainload GRUB2 from NTLDR

    I am not posting.

    But you can make windows the default on the external and set the time down to 3 seconds (you have to be quick to get to Ubuntu) and everyone else gets to windows without any issue or even having to make a choice. With the mbr bin you still have to choose in windows boot.ini or BCD.
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  3. #3
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    Re: chainload GRUB2 from NTLDR

    Quote Originally Posted by oldfred View Post
    I am not posting.

    But you can make windows the default on the external and set the time down to 3 seconds (you have to be quick to get to Ubuntu) and everyone else gets to windows without any issue or even having to make a choice. With the mbr bin you still have to choose in windows boot.ini or BCD.
    That's just plain confusing.

    The way I see it you have 3 choices.

    1. Download EasyBCD for windows (i think thats what oldfred was talking about) and set it up to be able to boot your ubuntu and windows partitions.

    2. Install GRUB to sda (when installing it will automatically detect windows and ubuntu) then set windows as the default.

    3. Set your bios to boot from the external, set windows to default in GRUB.

    PS I am going to complain about your setup.... you'd be better off getting a 2nd internal drive and using that for Ubuntu and make the external all storage. An internal hard drive with a SATA connection will work faster than an external through USB, it will also run cooler because the inside of your computer has fans blowing all around. With the frequency you need to access that external drive just to run ubuntu it's really going to heat it up and if that hard drive dies, so does the storage.... just something to think about....
    Last edited by synapsys; July 3rd, 2010 at 06:05 AM.
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  4. #4
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    Re: chainload GRUB2 from NTLDR

    Quote Originally Posted by synapsys View Post
    1. Download EasyBCD for windows (i think thats what oldfred was talking about)
    I think he is talking about the option

    USB booting from BIOS works
    - Select this option by default
    - in grub - select booting windows by default
    - ...

  5. #5
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    Re: chainload GRUB2 from NTLDR

    GRUB default might work. I didn't buy an internal for a few reasons, 1. I didn't have cables to set it up 2. I have not clue what type of HDD I would need for it and 3. some people have parents that won't let them (even on another HDD) do anything close to installing Linux.

    The other is would it be possible to take this drive to another computer to boot and have it boot correctly (just wondering)

    Reason I want NTLDR is again parents don't want me messing with the BIOS setup.

    @synapsys: 2. and when the drive is not present?

  6. #6
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    Re: chainload GRUB2 from NTLDR

    I am not a fan of adding another boot loader (easyBCD) into the mix as that just adds more confusion. You still have to choose what to boot on start up.

    With #2 you cannot boot without the external. You would have to add a grub partition to the internal to make it work.

    Choice #3 is what I recommend. Changing boot order in BIOS is no big deal. If external is not there it just defaults to the internal. With grub in the external it will let you boot if plugged into another system. And with grub set to boot windows, you get windows no matter what without any selection.
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  7. #7
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    Re: chainload GRUB2 from NTLDR

    how to set GRUB2 default to sda1 (WIN)? I am not going to mark solved yet I know it's possible I just need someone who does it to tell me how. Also just a little thing can I make GRUB2 not add sda2 (RECOVERY) to the menu?

  8. #8
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    Re: chainload GRUB2 from NTLDR

    the easy way tochange what boots:

    Startup manager in synaptic will allow you to set boot default and the timeout even in lucid.

    https://help.ubuntu.com/community/StartUpManager
    Download and install "StartUp-Manager from Synaptic package downloads. It will be listed under System/Administration menu. You can set it to default with Ubuntu (different versions) or Windows. You can also set the start up time in seconds.

    the less easy but fully customized If you want to edit names the easiest is to just copy them to 40_custom:
    Total Custom menu:
    http://sourceforge.net/apps/mediawik...ms:Custom_Menu
    http://ubuntuforums.org/showthread.php?t=1483827
    OR Partial Custom:
    I used drs305's command to limit ubuntu entries to two, turned off os_prober so it does not look for other systems and totally customized my 40_custom.
    includes line to limit display to two
    Grub 2 Title Tweaks Thread -drs305
    http://ubuntuforums.org/showpost.php...54&postcount=1
    In /etc/default/grub I added this:
    GRUB_DISABLE_OS_PROBER=true

    Copy the windows entries from this:
    gedit /boot/grub/grub.cfg
    Copy them to and edit :
    gksudo gedit /etc/grub.d/40_custom
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

  9. #9
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    Re: chainload GRUB2 from NTLDR

    with OS_Prober disabled will the Kernel updates not be added to GRUB menu?

  10. #10
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    Re: chainload GRUB2 from NTLDR

    Quote Originally Posted by oldfred View Post
    I am not a fan of adding another boot loader (easyBCD) into the mix as that just adds more confusion. You still have to choose what to boot on start up.
    EasyBCD is NOT a boot loader, it simply modifies boot.ini in windows so you don't have to.
    The glass is neither half-full nor half-empty: it's twice as big as it needs to be.

    Shameless self promotion: Cache Money Blog

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