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Thread: instructing Ubuntu not to overwrite the Windows MBR

  1. #31
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    Re: instructing Ubuntu not to overwrite the Windows MBR

    Of course, when I install the Ubuntu 14.03, I want all the drives to be seen. I have already deleted the Ubuntu partitions and now have 20gb of unallocated space. There is already one 4gb swap partition set when I installed Mint (not included in this 20gb) so I assume, being that I never user hibernation, that I can get by without any more swap space. What type and size of partitions would you use under the "something else" option in the Ubuntu partitioning section? I assume it will ask if I want to write Grub to the MBR on sda1. If so I will answer yes, will I? Should I also click back and choose to write Grub to a boot partition on the Ubuntu drive as well?
    Last edited by archp2009; April 30th, 2014 at 11:44 PM.

  2. #32
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    Re: instructing Ubuntu not to overwrite the Windows MBR

    If you only have 20GB, just install / to that partition.

    You always install grub to the MBR or sda, never to any NTFS partition as that damages Windows. Only if using another grub2 as your primary boot might you install grub to the same partition more so it is not used to boot.
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    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







  3. #33
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    Re: instructing Ubuntu not to overwrite the Windows MBR

    Installed successfully. Only thing the Mint won't load. I get the Mint logo and a line of text across the top of the screen reading Keys: Continue to wait Press S to skip Mounting, or M for mnaual recovery. I tried M and it said home directory does not appear to exit. Suggestions?

  4. #34
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    Re: instructing Ubuntu not to overwrite the Windows MBR

    Did Mint have another partition for /home? And is that still there?
    If just corrupted you can run fsck to fix it.

    May be best to see details.
    Boot Repair -Also handles LVM, GPT, separate /boot and UEFI dual boot.:
    https://help.ubuntu.com/community/Boot-Repair
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







  5. #35
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    Re: instructing Ubuntu not to overwrite the Windows MBR

    I'm thinking the obvious answer is that I inadvertently deleted the home partition for Mint when I was preparing to install Ubuntu. I'll have to try that boot disk again to see what it says now.

  6. #36
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    Re: instructing Ubuntu not to overwrite the Windows MBR

    The new boot info report is at http://paste.ubuntu.com/7372158/
    Can you tell anything from that? Should I delete the Mint partition/s and reinstall it as well?

  7. #37
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    Re: instructing Ubuntu not to overwrite the Windows MBR

    This looks like Ubuntu now:
    # /home was on /dev/sdc7 during installation
    UUID=b1fe2cc7-32e3-4866-ac8b-5d96b411db9c /home ext3 defaults 0 2

    I would install grub2 to the MBR of sdc and put Windows boot loaders in sda, and keep Windows boot loader in sdb. And set BIOS to boot sdc.

    You also need to make sure grub reinstalls to correct drive on major updates.


    #To see what drive grub2 uses see this line - grub-pc/install_devices:
    sudo debconf-show grub-pc
    sudo grub-probe -t device /boot/grub

    #to get grub2 to remember where to reinstall on updates:
    sudo dpkg-reconfigure grub-pc
    #Enter thru first pages,spacebar to choose/unchoose drive, enter to accept, do not choose partitions
    For info on UEFI boot install & repair:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







  8. #38
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    Re: instructing Ubuntu not to overwrite the Windows MBR

    Thanks for the reply. I have typed between the lines in blue.

    Quote Originally Posted by oldfred View Post
    This looks like Ubuntu now:
    # /home was on /dev/sdc7 during installation
    UUID=b1fe2cc7-32e3-4866-ac8b-5d96b411db9c /home ext3 defaults 0 2

    Can you tell whether or not I deleted it for Ubuntu?

    I would install grub2 to the MBR of sdc and put Windows boot loaders in sda, and keep Windows boot loader in sdb. And set BIOS to boot sdc.

    Do you mean during reinstallation of Mint? I did not get a question regarding where Grub was going to be installed when I installed Ubuntu. It just reported what is was doing during installation. In my BIOS I get names for my 3 drives that do not tell me which is which. How do I ascertain which is which by looking at the names in BIOS?

    You also need to make sure grub reinstalls to correct drive on major updates.


    #To see what drive grub2 uses see this line - grub-pc/install_devices:
    sudo debconf-show grub-pc
    sudo grub-probe -t device /boot/grub

    These lines are in the info report, are they?

    #to get grub2 to remember where to reinstall on updates:
    sudo dpkg-reconfigure grub-pc
    #Enter thru first pages,spacebar to choose/unchoose drive, enter to accept, do not choose partitions

  9. #39
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    Re: instructing Ubuntu not to overwrite the Windows MBR

    Mint is reinstalled an all is well. Thanks so much for your kind suppot over the past couple of weeks.

  10. #40
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    Re: instructing Ubuntu not to overwrite the Windows MBR

    Is Ubuntu Gnome 3http://ubuntugnome.org/download/ installed on top of Ubuntu 14.03 or is it an alternative version of Ubuntu? Do you rcommend it. I'm not a big fan of the icons down the left sde of the screen.

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