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Thread: Dual boot problems (WINDOWS 8.1)

  1. #1
    Join Date
    May 2014
    Beans
    1

    Dual boot problems (WINDOWS 8.1)

    Hey everybody, I was trying to install Ubuntu LTS 14.04 64 bits alongside my Windows 8.1 64 bit OS but after finishing the process described here (http://www.everydaylinuxuser.com/201...ndows.html?m=1), GRUB fails to load on startup. Any ideas?

    Here's the boot-repair link: http://paste.ubuntu.com/7455390/

  2. #2
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Dual boot problems (WINDOWS 8.1)

    It says it reinstalled grub without error. Not sure what other error Boot-Repair is reporting.

    grub-install /dev/sda: exit code of grub-install /dev/sda:0

    Can you boot ubuntu entry in UEFI menu?
    BootOrder: 0002,3000,3002,3003,2001,2002,2003
    Boot0000* Windows Boot Manager
    Boot0001* USB Hard Drive (UEFI) - SMI USB DISK
    Boot2001* USB Drive (UEFI)
    Boot2002* Internal CD/DVD ROM Drive (UEFI)
    Boot3000* Internal Hard Disk or Solid State Disk
    Boot3002* Internal Hard Disk or Solid State Disk
    Boot3003* Internal Hard Disk or Solid State Disk
    Boot0002* ubuntu.


    Systems that only boot Windows from UEFI. Work arounds -Often Sony & HP, maybe others
    Users who manually moved efi files around see post #6
    http://ubuntuforums.org/showthread.php?t=2101840
    http://ubuntuforums.org/showthread.php?t=2219452
    some find this changing this to be shim or grub /EFI/Boot/bootx64.efi
    Then booting device or hard drive works also.
    http://ubuntuforums.org/showthread.p...9#post13012109

    Boot_Repair - Always say no until proven that you only can boot Windows entry from UEFI menu.
    buggy-kernel detected. Do you want to activate [Backup and rename Windows EFI files]? yes (if any choice fails, please retry with the other)
    To undo & to rename files to their original names, you just need to tick the "Restore EFI backups" option of Boot-Repair.

    Any rename either manually or with Boot-Repair will need to be redone after a Windows update as it will restore Windows files.

    Alternative to Boot-Repairs rename of shim.
    Some systems work better to register grub/shim from inside Windows - for those that keep resetting Windows as default
    http://askubuntu.com/questions/37155...3-10-dual-boot
    bcdedit /set {bootmgr} path \EFI\ubuntu\grubx64.efi
    https://coderwall.com/p/vfyqkg

    If Description has to be Windows then change description.
    sudo efibootmgr -c -L "Windows Boot Manager" -l " \EFI\ubuntu\shimx64.efi"

    Some install rEFInd which seems to be another workaround and has nice boot icons.
    http://www.rodsbooks.com/refind/index.html
    http://www.rodsbooks.com/refind/secureboot.html
    For info on UEFI boot install & repair - Updated Mar 2015:
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to close thread when/if answered completely.







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