Fix UEFI Boot


  1. Posts : 5
    Win 10
       #1

    Fix UEFI Boot


    I have my neighbors lenovo laptop and it will not boot. It got stuck on "restarting" and i powered it off now it will not boot. I messed around for hours with recovery tools and dos commands with no luck. Startup repair or diskpart did not work. I did have some unallocated HD space and i want to install Windows 10 on that so i started the process. The laptop boots with UEFI and was wondering if there was a way to recover the messed up main partition. The bottom line is i want to be able to dual boot.
      My Computer


  2. Posts : 12
    Windows 10 Build 14393
       #2

    Install windows 10 normally on another partition then go into file explorer and copy all of the data on the the other partition to the functional partition (exclude system files) and then delete the broken partition.
      My Computer


  3. Posts : 13,957
    Windows 10 Pro X64 21H1 19043.1503
       #3

    Did you try chkdsk /x /f /r from the Command Prompt of a install DVD or flash drive ?

    If no help, try

    bootrec /scanos
    bootrec /rebuildbcd
    bootrec /fixboot
    bootrec /fixmbr


    Reboot and see if that resolved the problem.
      My Computers


  4. Posts : 5
    Win 10
    Thread Starter
       #4

    Ztruker said:
    Did you try chkdsk /x /f /r from the Command Prompt of a install DVD or flash drive ?

    If no help, try

    bootrec /scanos
    bootrec /rebuildbcd
    bootrec /fixboot
    bootrec /fixmbr


    Reboot and see if that resolved the problem.
    I did try this earlier fixboot said access was denied
      My Computer


  5. Posts : 13,957
    Windows 10 Pro X64 21H1 19043.1503
       #5

    You booted the install DVD or flash drive? Took the Repair your computer choice to get to a Command Prompt?

    Please post the results of the following from the Command Prompt:

    diskpart
    list disk
    sel disk # (where # is the disk Windows 10 is on)
    detail disk

    Capture with a digital camera or your phone and post the picture here please.
      My Computers


  6. Posts : 15
    Windows 10
       #6

    In this case I would recommend using a Linux Live Fedora Bootable USB. This will allow you to Access the HDD and copy over important files to an external HDD. After this is done you can safely clean install Windows 10 properly.
      My Computer


  7. Posts : 1,221
    Windows 8.1, Win10Pro
       #7

    Linux solutions NO LONGER WORK unless you have disabled Fast Startup in Win10 because with that enabled (which it is by default!), when you go to access the Windows filesystem, Linux will complain that it can't mount the volumes! That is because Fast Startup keeps the volumes mounted, even when Windows is not running, and Linux will not mount them a second time.
      My Computer


  8. Posts : 15
    Windows 10
       #8

    Mark Phelps said:
    Linux solutions NO LONGER WORK unless you have disabled Fast Startup in Win10 because with that enabled (which it is by default!), when you go to access the Windows filesystem, Linux will complain that it can't mount the volumes! That is because Fast Startup keeps the volumes mounted, even when Windows is not running, and Linux will not mount them a second time.
    If you get an error message like the following:
    “Unable to access “xxx GB Volume” The NTFS partition is an unsafe state. Please resume and shutdown Windows fully (no hibernation or fast restarting), or mount the volume read-only with the ‘ro’ mount option.

    To the top left click Activities and then left click Show Applications:

    To the right, select the orb to move down to the next screen or applications:

    Left click Utilities:

    Left Click Disks:

    To the left ensure you have your Windows HDD/SSD selected:

    Select the largest partition by left clicking on it and left click the settings crank:

    Select Edit Mount Settings:

    Turn Automatic Mount Options off:

    Left click the field:
    nosuid.nodev,nofail,x-gvfs-show

    At the end add ,ro with no spaces (comma) so it says:
    nosuid.nodev,nofail,x-gvfs-show,ro

    Select ok and now your Windows HDD/SSD will be read only allowing you to copy the data from it.
      My Computer


 

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