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Thread: Dual Boot Problem - GPT error

  1. #11
    Join Date
    Nov 2005
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    Philippines
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    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Dual Boot Problem - GPT error

    I just installed Ubuntu, selecting Erase disc, it gives me a warning about GPT but was able to install Ubuntu.

    I opened up gparted again and this time, without error.
    Last time I installed ubuntu on other machines, I get /boot with ext3 or ext4 on that partition. This time, I get /boot/efi with FAT32. Is this normal? FAT32 for /boot/efi ?

    Currently, I'm tring to figure out how to install my machine's NVIDIA Optimus driver, found on http://ubuntuforums.org/showthread.php?t=2101540
    If this would work, then it's bye-bye win7 in this machine. Else, I'll be back with a dual boot. But this time, I'll use gparted to repartition the hard drive ready for Win 7 (without the system reserved) to install and then Ubuntu as 2nd OS.

    I won't ditch Win7 in this machine until all features in this laptop is usable or working on my Ubuntu install.

    I won't mark this as solved yet. Not until my other problem is solved, or when after reinstalling Win 7 and able to dual boot with Ubuntu.

  2. #12
    Join Date
    Mar 2010
    Location
    Portland; PM free zone.
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    9,393
    Distro
    Lubuntu 14.04 Trusty Tahr

    Re: Dual Boot Problem - GPT error

    Quote Originally Posted by kenweill View Post
    I just did "Recommended repair" with boot-info and I still got the same problem.
    Run boot-info again and got this http://paste.ubuntu.com/1508946/
    Recommended repair is still the same.

    I'll try to use gparted to create partitions then install Win 7 (first) and see if this may solve the problem.

    Did you run the fixparts program?

  3. #13
    Join Date
    Nov 2005
    Location
    Philippines
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    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Dual Boot Problem - GPT error

    Quote Originally Posted by TheFu View Post
    Did you run the fixparts program?
    Nope. I just decided to wipe entire disk and decided to install Ubuntu in it. It works. Gparted is is now able to view partitions without the GPT error.

    Now, going back to dual booting, I repartition my HDD with:
    partition 1 = NTFS (for windows system)
    partition 2 = NTFS (for my documents)
    partition 3 = blank partition

    It was a success.

    Then I tried to install Win 7 SP1 64bit, but can't install this time on the HDD. I get "Windows cannot be installed to this disk. The selected disk is of the GPT partition style". This is now a windows issue on GPT partition but I'm wondering why the Windows preinstalled on this laptop was able to work with Ubuntu before. This time with my installer, it won't even install on GPT partitions.

    As of now, I'll look into this matter for solutions. If not, then I'll be forced to repartition using Windows installer and back to MBR with Ubuntu giving GPT error.

    I'll keep this thread updated.

  4. #14
    Join Date
    Jun 2009
    Location
    SW Forida
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    Distro
    Ubuntu 16.04 Xenial Xerus

    Re: Dual Boot Problem - GPT error

    Somewhere you had gpt and installed Windows in MBR. If you had run fixparts it would have removed the backup partition table.

    If you have an efi partition as the first partition you have a new UEFI system and Ubuntu installed in that mode. Windows then will only install to gpt partitioned drives with UEFI. Or both systems need to be UEFI or both systems BIOS based installs.

    Both Windows & Ubuntu should from the UEFI menu offer to boot a UEFI or BIOS/legacy/whatever version and how the installer or liveCD boots if how it will install.

    If Windows 8 and secure boot:
    You will need to use the 64 bit version of 12.10 and from the UEFI menu boot the flash drive in UEFI mode. That way it will install in UEFI mode.
    Systems need quick boot or fast boot turned off in UEFI settings.
    https://help.ubuntu.com/community/UEFI
    https://wiki.archlinux.org/index.php/UEFI
    https://help.ubuntu.com/community/UEFIBooting

    But if Windows 7 you can install 12.04 as it works with UEFI but not with secure boot. 12.10 has the newest grub2 2.00 that supports UEFI secure boot. With the next point release of 12.04 it is also supposed to get grub2 2.00, but has 1.99 now.
    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.

  5. #15
    Join Date
    Nov 2005
    Location
    Philippines
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    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Dual Boot Problem - GPT error

    Problem is solved.

    From Live boot, I used gparted to delete all partitions. Then create a new partition table as "msdos" as it's type, created 2 ntfs partition and an empty 50gig space for Ubuntu.

    I installed Windows 7 this time without problem. After installing Windows 7, tried Ubuntu Liveboot again and all partitions are now visible without any error.

    Ubuntu works on "msdos" and "gpt" partition type but the Win7 I have only works on "msdos". So I just decided to just use "msdos" to have Win 7 installed, dual booted with Ubuntu.

    Thanks for all your help guys.

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