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Thread: grub2 problem

  1. #11
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    dino99 is offline Ubuntu addict and loving it
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    Re: grub2 problem

    you already got it, but without seeing it i suppose; watch the grub link below

  2. #12
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    Re: grub2 problem

    hi ,darkod , oldfred , dino99

    i have read that http://www.multibooters.co.uk/multiboot.html ,thx "oldfred"

    i have got small problem now
    i have downloaded a program called "burg manager" which lead me to download "super boot manager " those tools wasn't very bad until i though to check the resolution.
    a year ago when i downloaded my first Ubuntu and tried to change the resolution from "grub customizer" i have got that same problem but restoring the boot was very hard at that time .

    the same happened now , the burg worked great until i changed the resolution ,,, restart ,, and ,,,, boot is missing
    of curse this is not a problem , i restored my boot by the same command's , but

    * windows's 7 lost it's genuine , and alert me to activate :O
    ** windows xp saying missing bootmgr !!
    *** i don't know how windows 7 boot with out bootmgr

    i haven't fixed the problem yet because i want to know what happened
    1: could lilo boot windows 7 from winload.exe directly?
    2: what does the resolution do !!!
    i remember that i have tried to set a picture to grub and that failed too
    ,

    any idea's about what happened

  3. #13
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    Re: grub2 problem

    Sorry, I just use the default grub2 and have no clue how burg works and what it may have done. Looking back in this thread I am not even sure whether you sorted out your windows boot files or not. Your problem was with windows boot files, not grub2 or ubuntu.

    Do you have separate win7 and winXP files now? Are they on the respective 7 and XP partitions?
    Darko.
    -----------------------------------------------------------------------
    Ubuntu 12.04 LTS 64bit & Windows 7 Ultimate 64bit

  4. #14
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    Re: grub2 problem

    Also burg has not been maintained, so it may not work well with the newest grub2.

    Last update 2010
    http://code.google.com/p/burg/downloads/list

    Grub2 or burg only chain load to working Windows, so you have to fix Windows to get grub to be able to boot them. Grub just forces a jump to the Windows PBR - partition boot sector and then Windows takes over.

    If XP says bootmgr missing, it has been converted to a Vista/7 partition boot sector. I ran chkdsk from Windows 7 repair CD on my XP and it did the same thing. It converted PBR to want to use bootmgr. You can use testdisk to restore from backup if you have only overwritten it once. Or use Windows 7 to write the old PBR.

    Fix for most, a few have other issues, better than windows fix in many cases as it also fixes other parameters:
    If win7 use small 'system reserved' NTFS partition instead of the partition where windows was installed for win7
    This has instructions on using testdisk to repair the install of grub to the boot sector for windows from Ubuntu or Linux LiveCD.
    http://sourceforge.net/apps/mediawik...ms:Boot_Sector
    You want to get to this screen:
    http://www.cgsecurity.org/wiki/TestD...ector_recovery

    OR:
    [HowTo] Repair the bootsector of a Windows partition - YannBuntu
    https://help.ubuntu.com/community/BootSectorFix
    http://ubuntuforums.org/showthread.php?t=1926510

    OR:

    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 boot sectors - 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
    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. #15
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    Re: grub2 problem

    this kind of another questions so u dont have to read the whole article ( i know i respond after some time because of study ;/)

    i am going to do is repair each windows boot with flag on it's partition to separate boot file's .

    grub is great that i can boot to windows 7 without bootmgr but why windows activation alert's me ? does activation has something with bootmgr ? :O (1)

    my grub menu sometime's get's big and the other time return small ? any idea ? (2)

    that testdisk tool look interesting

  6. #16
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    Re: grub2 problem

    Grub does not bypass bootmgr or ntldr. Windows boots from MBR (like all BIOS systems), but then MBR loads and finds PBR or partition boot sector with more code. The PBR will refer to bootmgr or ntldr to continue to boot Windows.
    All grub does is bypass MBR and jump straight to PBR to let Windows then take over.

    While mostly Vista, it shows BIOS/MBR booting which is how computers have booted since first hard drive in mid 1980s and still boot. Except the new UEFI systems.
    Multibooters, Pictures here worth 1000+ words
    http://www.multibooters.co.uk/multiboot.html
    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.







  7. #17
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    Re: grub2 problem

    i have read the whole article on the that link , i thought the grub was booting directly from winload.exe
    looks like i had an extra bootmgr on windows xp partition due to the many boot repair's before .
    but i am sure that if i did tried to change the resolution from grub the boot will go down again.

    doesn't matter now , i have some exam's this week and after finishing i will repair windows xp and 7 genuine , reinstall grub again , after that i go change the resolution to see if the problem will occur again or not ;/

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