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Thread: Grub won't load Windows 7

  1. #11
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Grub won't load Windows 7

    It looks like you did several of the Windows repairs, but did you run chkdsk? That is almost always the first thing required and often has to be run more than once or until there are no errors.

    How to Boot to the System Recovery Options in Windows 7
    http://www.sevenforums.com/tutorials...y-options.html
    http://www.sevenforums.com/tutorials...ot-record.html
    http://windows7ultimate.windowsreins...indexthumbs.ht
    fix boot loader With screen shots from full Windows install media
    http://www.howtogeek.com/howto/32523...ader-problems/

    Above links summarized, see links if more detail desired
    You will need to boot with your Vista/Windows 7 installation disk or repair disk. Hit Enter at the language selection prompt then hit "R" to get to the repair section. You can then select the automatic boot repair tool, but it often will not do any good. Then select the command prompt (console) and type in the following commands:
    # is comment do not copy or type comments
    BootRec.exe /fixMBR #updates MBR master boot record do not run if you still want grub
    chkdsk C: /r #(have to run /r or /f as separate entries) rerun until no errors
    BootRec.exe /FixBoot #updates PBR partition boot sector or see bootsect.exe commands
    chkdsk c: /r
    BootRec.exe /ScanOs
    BootRec.exe /RebuildBcd


    Script says boot sector is ok, but it only checks that it is there and over all looks ok. Sometimes it needs complete replacing, then a chkdsk.
    How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair startup issues in Windows
    http://support.microsoft.com/kb/927392
    http://www.sevenforums.com/tutorials...ot-record.html
    Use bootsect.exe to repair XP & older or Vista/7 bootsectors - Use diskpart, then list volumes to see which drive to use
    bootsect.exe /nt52 c: *compatible* with operating systems older (XP) than Windows Vista.
    bootsect.exe /nt60 c: *compatible* with Windows Vista, Windows Server 2008 or later


    Many of the Windows repairs will reinstall the Windows boot loader to the MBR. That is ok, as until you can directly boot Windows, grub will not boot Windows.

    Then once Windows is working then you can add the grub menu back into the MBR with 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.




  2. #12
    Join Date
    Nov 2012
    Beans
    8

    Re: Grub won't load Windows 7

    Quote Originally Posted by oldfred View Post
    It looks like you did several of the Windows repairs, but did you run chkdsk? That is almost always the first thing required and often has to be run more than once or until there are no errors.

    How to Boot to the System Recovery Options in Windows 7
    http://www.sevenforums.com/tutorials...y-options.html
    http://www.sevenforums.com/tutorials...ot-record.html
    http://windows7ultimate.windowsreins...indexthumbs.ht
    fix boot loader With screen shots from full Windows install media
    http://www.howtogeek.com/howto/32523...ader-problems/

    Above links summarized, see links if more detail desired
    You will need to boot with your Vista/Windows 7 installation disk or repair disk. Hit Enter at the language selection prompt then hit "R" to get to the repair section. You can then select the automatic boot repair tool, but it often will not do any good. Then select the command prompt (console) and type in the following commands:
    # is comment do not copy or type comments
    BootRec.exe /fixMBR #updates MBR master boot record do not run if you still want grub
    chkdsk C: /r #(have to run /r or /f as separate entries) rerun until no errors
    BootRec.exe /FixBoot #updates PBR partition boot sector or see bootsect.exe commands
    chkdsk c: /r
    BootRec.exe /ScanOs
    BootRec.exe /RebuildBcd


    Script says boot sector is ok, but it only checks that it is there and over all looks ok. Sometimes it needs complete replacing, then a chkdsk.
    How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair startup issues in Windows
    http://support.microsoft.com/kb/927392
    http://www.sevenforums.com/tutorials...ot-record.html
    Use bootsect.exe to repair XP & older or Vista/7 bootsectors - Use diskpart, then list volumes to see which drive to use
    bootsect.exe /nt52 c: *compatible* with operating systems older (XP) than Windows Vista.
    bootsect.exe /nt60 c: *compatible* with Windows Vista, Windows Server 2008 or later


    Many of the Windows repairs will reinstall the Windows boot loader to the MBR. That is ok, as until you can directly boot Windows, grub will not boot Windows.

    Then once Windows is working then you can add the grub menu back into the MBR with Boot-Repair.
    Hey I ran a chkdsk and no problems were found. I also ran the bootsect.exe commands and still Windows 7 won't boot. I don't know what else I can do. I already tried reinstalling Windows 7 and that didn't even help it boot.

  3. #13
    Join Date
    Nov 2012
    Beans
    8

    Re: Grub won't load Windows 7

    Backed up harddrive, reformatted and reinstalled Windows Vista, then upgraded to Windows 7, now about to install Ubuntu on partition

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