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Thread: windows not booting in grub2

  1. #1
    Join Date
    Jun 2007
    Buenos Aires, Argentina
    Hardy Heron (Ubuntu Development)

    windows not booting in grub2

    Hi, I have a computer with Ubuntu 12.04 and I can't boot to windows 7, every time that I selected in grub it take back to the grub menu. This is the boot-repair report

  2. #2
    Join Date
    Jun 2009
    SW Forida
    Ubuntu 16.04 Xenial Xerus

    Re: windows not booting in grub2

    You have installed grub2's boot loader to the PBR or partition boot sector of the Windows partition. Windows has to have a Windows PBR in all NTFS partitions, not grub.

    sda1: ______________________________________________________
        File system:       ntfs
        Boot sector type:  Grub2 (v1.99-2.00)
        Boot sector info:  Grub2 (v1.99) is installed in the boot sector of sda1 
                           and looks at sector 296189104 of the same hard drive 
                           for core.img. core.img is at this location and looks 
                           for (,msdos7)/boot/grub on this drive. No errors found 
                           in the Boot Parameter Block.
        Operating System:  Windows 7
        Boot files:        /grldr /bootmgr /Boot/BCD 
                           /Windows/System32/winload.exe /grldr
    Fix for most, a few have other issues, better than windows fix in many cases as it also fixes other parameters:

    This has instructions on using testdisk to repair the install of grub to the boot sector for windows from Ubuntu or Linux LiveCD.
    You want to get to this screen:


    [HowTo] Repair the bootsector of a Windows partition - YannBuntu

    You show several /grldr folders. Were you trying to use EasyBCD? I so you may want to try their forums.
    For more info on UEFI boot install & repair - Regularly Updated :
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

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