Windows 10: Windows 11. Cannot update: couldn't update the system reserved partition

Discus and support Windows 11. Cannot update: couldn't update the system reserved partition in Windows 10 Software and Apps to solve the problem; Hello all,Apologies as I did see a thread on this same topic, but it was quite busy with many posts not addressedCame across this error message when... Discussion in 'Windows 10 Software and Apps' started by SmashbrothaX, Mar 28, 2025.

  1. SMASHBROTHAX
    SmashbrothaX Win User

    Windows 11. Cannot update: couldn't update the system reserved partition


    Hello all,Apologies as I did see a thread on this same topic, but it was quite busy with many posts not addressedCame across this error message when trying to upgrade to Windows 11, version 24H2. The issue is I found what I believe is the correct partition, but I'm not able to increase the size greater than 100mg I even tried to decrease the size of my C drive partition thinking that would allow me to do so. I'm assuming the applicable partition is "Disk 0 partition 1" below, right?So, I guess my question is: is there actually a way to increase the partition size? Or does this mean it's t

    :)
     
    SmashbrothaX, Mar 28, 2025
    #1
  2. RAMESH SRINIVASAN
    Ramesh Srinivasan Win User
    Ramesh Srinivasan, Mar 28, 2025
    #2
  3. ANTHONY GAL
    Anthony Gal Win User
    Anthony Gal, Mar 28, 2025
    #3
  4. ROBERT ALDWINCKLE ON FORUMS
    Robert Aldwinckle on forums Win User

    Windows 11. Cannot update: couldn't update the system reserved partition

    We couldn't update the system reserved partition - Windows 10 1803 Updates won't install

    The usual suggestion is to clean it out.

    https://support.microsoft.com/en-us/help/3086249/we-couldn-t-update-system-reserved-partition-error-installing-windows

    Are you implying DISM is showing a message about bootmgr? What is the message exactly? You may need to use a different DISM syntax and point to a /source:

    Otherwise it may be bogus. For a possibly related incident see

    https://answers.microsoft.com/en-us/windows/forum/windows_10-update-winpc/windows-10-update-kb3213986-fails-repeatedly-with/46d9b1af-71a6-4d39-acaf-c3882047ac12

    What are the details for that?

    HTH

    Robert Aldwinckle

    ---
     
    Robert Aldwinckle on forums, Mar 28, 2025
    #4
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Windows 11. Cannot update: couldn't update the system reserved partition

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