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Thread: Need help on the EFI files

  1. #1
    Join Date
    Aug 2013
    Beans
    13

    Exclamation Need help on the EFI files

    I used http://ubuntuforums.org/showthread.php?t=1769482
    and accidentally used "restore mbr" on my ASUS A55V lappy that is EFI in it.
    then i stirred the things up, and now, i succeeded on booting my kali linux and ubuntu but not the windows 7 64 bit

    I'm totally new to this territory, so I need help~~
    now my boot file points to /boot/efi
    and the recovery partition is accessible on linux-based os.

    This is my current 25_custom file in /etc/grub.d

    Code:
    #!/bin/sh
    exec tail -n +3 $0
    
    menuentry "Windows UEFI bkpbootmgfw.efi" {
    search --fs-uuid --no-floppy --set=root F077-A6AD
    chainloader /EFI/Microsoft/Boot/bootmgfw.efi
    }
    
    menuentry "Windows Boot UEFI loader" {
    search --fs-uuid --no-floppy --set=root F077-A6AD
    chainloader /EFI/Boot/bootx64.efi
    }
    Now Windows 7 boot with error 0xc000000f
    that the required device is inaccessible

    Repair Disc tried, but says not for my laptop
    Windows 7 Disc - repair tried, same as above

  2. #2
    Join Date
    Mar 2011
    Beans
    499

    Re: Need help on the EFI files

    Maybe try adding the root to the path in grub.cfg (and in the custom file like:
    chainloader (${root})/EFI/Microsoft/Boot/bootmgfw.efi

  3. #3
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Need help on the EFI files

    Post the link to the BootInfo report that Boot-Repair creates,
    But it sounds like it just is a Windows error and you need to use you Windows repair flash drive to fix it. Windows 7 is usually BIOS with MBR partitioning, so I am not sure if you need a different repair flash more like the Windows 8 version.

    Windows 7 repair USB, Also Vista if service pack installed
    http://www.intowindows.com/how-to-re...tion-dvd-disc/
    http://www.webupd8.org/2010/10/creat...usb-drive.html
    Windows 8 UEFI repair USB must be FAT32
    http://www.eightforums.com/tutorials...ndows-8-a.html
    http://social.msdn.microsoft.com/For...-166dddf32205/
    http://www.ghacks.net/2012/11/01/how...m-repair-disc/


    http://www.sevenforums.com/
    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.







  4. #4
    Join Date
    Aug 2013
    Beans
    13

    Re: Need help on the EFI files

    Thanks for helping!
    Trying now and will give an update after it's done.

  5. #5
    Join Date
    Aug 2013
    Beans
    13

    Re: Need help on the EFI files

    now I got another problem...
    that is, it can't seem to find an operating system from my hard drive but it exists

  6. #6
    Join Date
    Jun 2009
    Location
    Chicago Suburbs
    Beans
    Hidden!
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Need help on the EFI files

    If UEFI/BIOS you have different ways to boot from UEFI. You have UEFI which then has to find boot files in the efi partition. And you have Compatibility Support Module (CSM), which emulates a BIOS mode and will boot from the MBR.

    Post the link to BootInfo report. Part of Boot-Repair.
    https://help.ubuntu.com/community/Boot-Info
    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. #7
    Join Date
    Aug 2013
    Beans
    13

    Re: Need help on the EFI files

    Thanks for replying, but I'm already dumped my laptop to the manufacturer's place XD
    Thanks again for getting a reply that fast.

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