Windows 10: Missing operating system

Discus and support Missing operating system in Windows 10 Installation and Upgrade to solve the problem; Hi, I was having issues with my Windows not loading up user profiles when starting up. One of the recommendations was to do a fix of mbr where i was... Discussion in 'Windows 10 Installation and Upgrade' started by Prdglsn_1500, Jun 9, 2019.

  1. Missing operating system


    Hi,


    I was having issues with my Windows not loading up user profiles when starting up. One of the recommendations was to do a fix of mbr where i was having an access denied error. This was solved by doing a bootsect/ntsys 60 command but did not solve the original issue.


    Later on, I found a suggestion to change use diskpart. I selected my only disk volume and created a partition and made it active. Further down the line, I changed ntfs to fat32 using format fs ntfs=fat32 quick. It did not resolve the problem.


    In short, I tried to restore the formatting but forgot to put the quick command. I keyed the correct command but it was saying that there's a concurrent action and could not proceed. I was quick to shut down the desktop PC thinking I could kill the process and redo the format. But lo and behold, I got this Missing Operating System error.


    I tried doing the Restore Optimized Defaults in my Gigabyte® UEFI DualBios but to no avail. Please help.


    Thanks!

    :)
     
    Prdglsn_1500, Jun 9, 2019
    #1
  2. Bing54088 Win User

    After updates Windows 10 says "Missing operating system"

    I have the same issue, and I followed your suggestion steps. After that, I can see C: drive, and Windows folder is there.

    Then I rebooted the computer. But I still have the missing the operation system issue. Any suggestions?

    Thanks.
     
    Bing54088, Jun 9, 2019
    #2
  3. zbook Win User
    Programs not working


    In post 26 there were steps listed to fix the operating system corruption.
    Are you able to follow them?
    In post 29 was the suggested dism repair command.
     
    zbook, Jun 9, 2019
    #3
  4. Missing operating system

    "Missing operating system" after clean install of Windows 10

    Hi,

    Thank you for responding.

    I understand the inconvenience you are facing issues with upgrading to Windows 10.

    Do let us know if you have tried the troubleshooting steps being provided by Akheel Ahmed in the above post?

    If not yet tried I suggest you to follow the below:

    As there are different error notifications related to this issue like: "Missing operating system" and "An operating system wasn’t found".

    If you are getting the error “An operating system wasn’t found”. If you are seeing “An operating system wasn’t found” please see Knowledge Base article
    3103656.

    For reference: “Missing
    operating system” error when upgrading to Windows 10


    Hope it helps. Reply to the post with an updated status of this issue for further assistance.
     
    Deepika Gowda, Jun 9, 2019
    #4
Thema:

Missing operating system

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