How to Fix “BOOTMGR is Missing” in Windows 10

If your laptop has end with the horrendous content on startup – “ BOOTMGR is overleap ” , do n’t vex you are not alone . I misplaced my Windows bootloader data file while switch over from an HDD to SSD . I was finally capable to fix it after a certain figure of steps . So , if you have boarded the same geartrain , here are a few ways to fix boot manager is escape in Windows 10 .

How to Fix “BOOTMGR is Missing” in Windows 10

Before we set about , let ’s interpret what is Windows Boot Manager . In Windows 10 , theboot manager is an applicationthat stores boot surround variables and boot file locations . In simple words , the boot manager is the file that posses the locating of the Operating System that has to be boot . Hence , when the boot manager goes missing , the arrangement does n’t know what to reboot and the other boot file cabinet location . Missing boot coach does n’t necessarily imply that your Operating System has been erased . It ’s just that the file is missing and we will endeavor to rebuild it through the follow process .

1. Boot Order

First and first off , you need to ensure you are booting from the correct depot twist . To alter the storage gadget boot edict , we have to head over to the BIOS ( EFI Firmware configurations ! ) . Now , every twist has its own BIOS fare and yours would sure take issue from mine . However , mostly , to achieve the BIOS scene , force exclude down the equipment by long - campaign the Power Button . Next , resume your gimmick and press F2 until you reach the BIOS setting .

Now , commute the boot order and lend your SSD or HDD at the top . In my case , I am booting from a WD SSD and hence I have lay it to the first position in the boot order . Moreover , you also get a Boot Manager missing misplay if your boot style is correct to Legacy . Make indisputable the boot mode is lay out to UEFI alternatively of Legacy and secure iron heel is turned on . This ensures that GPT partition drives work and Windows 10 boots disregarding of the thrill gimmick order .

In case you are incognizant of GPT , it ’s a new partition system adopted by Windows 10 . GPT is more rich than MBR and also stores copies of the flush files at various position . Additionally , GPT sustain much more partitionsand disc size as compared to MBR .

bootmgr is missing windows 10

2. Startup Repair

Rare are the chances that the startup repair would work but we will still go through it as it leads to the second step . Foremost , we would need a Windows bootable USB which can be made using theWindows media creation toolor athird - company USB bootable software .

Insert the bootable USB parkway in your PC and resume the organization . you’re able to do that by pressing Ctrl+Alt+Delete or just long - press the king button . Once your system boots the Windows 10 Bootable drive , dawn on Next .

On the instalment window , you would see a small connexion called “ Repair your computer ” . select it .

boot-order-and-secure-boot

Next , select Troubleshoot to see more advanced options .

On the Advanced startup screen , snap on Startup Repair .

The startup fixing Window will necessitate you for the target operating system . Since it ’s a Windows 10 bootable USB , the target OS will be Windows 10 . clack on Windows 10 and let the Startup Repair bushel the progeny .

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3. bootrec utility

If the Startup Repair does n’t cultivate for you and you finish up on the following filmdom , fall into place on Advanced Options again .

Now , from the Advanced Options carte , tap Command Prompt .

On the command prompting , we will endeavor to fix the Windows flush files using the bootrec utility . It is a native Windows command - wrinkle tool to rebuild and set the Boot Manager files . you may also resort to other GUI - based pecker like EaseUS , MiniPartition which internally performs the same task .

repair you computer option on the windows 10 installation screen

The bootrec control only act on BIOS type Windows installment or MBR partitioned disk character . Mostly , you would be on GPT divider and UEFI , hence head over toStep 4 .

On the command prompt , typewrite the following command .

The next bid will rebuild the BCD ( Boot Configuration File ) .

troubleshoot-startup-options

In my guinea pig , the scanned Windows Installation telephone number is 0 because I ’m using a GPT partitioning schema and this method acting is for older MBR division type . If the command work , you will have a prompt stating “ Windows Installation : 1 ” and ask you to add up it to the BCD data file .

4. Create Boot Configuration File

If the Startup Repair does n’t work for you and you end up on the following screen , select Advanced Options again . We will rebuild the Windows BCD ( Boot Configuration Data ) filing cabinet via the mastery line .

The Windows BCD file is the one that informs the bootloader about the location of the boot files and other kicking - time configurations . Before we begin create a new conformation filing cabinet , we will have to find and rename the old one . Again , you would have to head over to the command line in the Startup Repair options . execute the following commands to export and rename the old BCD configuration single file .

Now , that we have renamed the quondam BCD data file , we need to hearten a Modern file afresh . Use the espouse program line to create a raw file .

startup-repair-options

Post this , do a restart and you should be able to bring up into Windows . I was capable to set my “ Boot Manager missing ” issue via this statement . If this does n’t work , move on to mistreat 5 .

5. System Restore

In case if you have ever taken a backup of your Windows organisation , now it is the time it might come handy . Again , you have to boot from the bootable USB and go to the Repair your Computer option . On the repair menu , you would see an choice called “ System Restore ” . press it and it will show you the previous Windows backup stored on your organization .

6. Reinstall Windows

If none of these steps works for you , the last resort would be to reinstall Windows . However , in monastic order to store your Desktop , Downloads and Document files , you’re able to do a Windows Live Boot and backup all those folders . To create a Windows Live Boot USB , we would require access to another laptop , Windows ISO file and a third - company tool likeWinToUSB . Once you have download the WinToUSB putz , install it and plug it in your USB drive .

The free version of WinToUSB allows live booting of Windows 10 Home variant . We would lower limit expect a USB stick of 16 GB .

On the WindowsToUSB Tool , select the Windows ISO fix and dawn on Next .

target-operating-system

On the next screen , choose your USB storage gadget and exit the partition scheme as nonpayment . It would n’t really matter as we just want a resilient bootable Windows 10 to back up our files .

Once you are done with the installation , remove the USB and plug it into the Windows laptop we require to set up .

Once the USB thrill , you will have passably much generic steps that are call for with a normal Windows installation . Go through it and let Windows inhabit O bang . Wiley Post - installation , you would n’t see your partitions in File Explorer as they are offline . manoeuvre over to the Disks Management cock and lend them online .

startup-repair-failed - bootmgr is missing windows 10

After the record are on-line , you should be able-bodied to see the partition in File Explorer . Backup your file and folders to a USB storage orGoogle Drive . stake the patronage , you may continue with a fresh Windows Installation .