How to merge old recovery partition with C Drive?


  1. Posts : 21
    Windows 11 professional 64bit
       #1

    How to merge old recovery partition with C Drive?


    Hi everyone,

    Having an absolute nightmare trying to figure out how to merge 500Mb of old recovery partition space to my main C Drive partition.

    I have deleted the recovery partition after checking it was the old and not current recovery. This has now left me with the relevant unallocated space.

    However, no matter what programme I use, I can't seem to merge it with my C drive partition. All the tutorials I see online show the unallocated space to the right hand side adjacent of the C drive and mine is to the left.

    Can someone please help?

    Thanks in advance.

    see pictures below from both windows disk manager and Aomei

    How to merge old recovery partition with C Drive?-windows-dsk-manager.png

    How to merge old recovery partition with C Drive?-aomei.png
      My Computer


  2. Posts : 4,673
    several
       #2

    that would change the start sector of the os partition. It can be done by 3rd party partition managers by booting into a pre os phase or winpe.

    you would need to move the msr partition to the left first, so it is adjacent to the 99mb esp.

    it is not worth the bother , no harm in leaving that small amount of unallocated space where it is.
      My Computer


  3. Posts : 21
    Windows 11 professional 64bit
    Thread Starter
       #3

    SIW2 said:
    that would change the start sector of the os partition. It can be done by 3rd party partition managers by booting into a pre os phase or winpe.

    you would need to move the msr partition to the left first, so it is adjacent to the esp.

    it is not worth the bother , no harm in leaving that small amount of unallocated space where it is.
    So is the only way to do this in a reliable way, to do a fresh install? Not gonna go down that route but in the future if I used the same SSD, that would do the trick? There's no quick and easy method to simply merge the unused space with my C drive (I know I'm prob oversimplifying this)
      My Computer


  4. Posts : 4,673
    several
       #4

    So is the only way to do this in a reliable way, to do a fresh install?
    no, that would be silly, a waste of time and a lot of unnecessary writing to the ssd.

    In this case it is only 500mb unallocated spce, I suggest leaving it alone.

    ****************************************************************************

    If there was a larger amount , then:

    immediately on the left of your os partition is a 16mb msr partition.

    How to merge old recovery partition with C Drive?-msr.jpg

    it is in the way

    if that was deleted or moved then a 3rd party partitioner would allow resizing the os partition into the unalloacted space on its left. But it cannot be done from within windows.

    the partition manager would request to reboot into winpe.
      My Computer


  5. Posts : 43,295
    Win 10 Pro (22H2) (2nd PC is 22H2)
       #5

    [QUOTE]All the tutorials I see online show the unallocated space to the right hand side adjacent of the C drive and mine is to the left.[/QUOTE

    Left or right makes no odds.

    What matters is that the unallocated space must be immediately adjacent to the partition you wish to extend into that unallocated space.
      My Computers


  6. Posts : 21
    Windows 11 professional 64bit
    Thread Starter
       #6

    SIW2 said:
    no, that would be silly, a waste of time and a lot of unnecessary writing to the ssd.

    In this case it is only 500mb unallocated spce, I suggest leaving it alone.

    ****************************************************************************

    If there was a larger amount , then:

    immediately on the left of your os partition is a 16mb msr partition.

    How to merge old recovery partition with C Drive?-msr.jpg

    it is in the way

    if that was deleted or moved then a 3rd party partitioner would allow resizing the os partition into the unalloacted space on its left. But it cannot be done from within windows.

    the partition manager would request to reboot into winpe.
    Thanks for the explanation. Last question. What is that 16mb msr partition? Is this to allow for windows update to always work? If I was to delete it, would I be able to create a new one after a merge? (I'm prob not going to do this but out of interest)
      My Computer


  7. Posts : 43,295
    Win 10 Pro (22H2) (2nd PC is 22H2)
       #7

    Microsoft Reserved Partition - Wikipedia

    The Microsoft Reserved Partition (MSR) is only used on the UEFI systems using GPT partition structure. It is created to reserve a portion of the disk space for possible subsequent usage by the Windows Operating System. This partition does not contain any meaningful data or any user data. However, it is assigned and ideally used for remapping damaged sectors.

    Beginning in Windows 10, the ‘Minimum’ size of the MSR is 16 MB. However, the recommended size for an MSR partition is 128 MB. You could check this link for more information on legacy systems and see if it is helpful.
      My Computers


  8. Posts : 4,673
    several
       #8

    If I was to delete it, would I be able to create a new one after a merge?
    yes

    At one point microsoft seemed to insist on it, yet apparently their own tool for mbr>gpt conversion does not create one.

    It is not needed for booting or normal function of the os

    https://learn.microsoft.com/en-us/wi...iew=windows-11
      My Computer


  9. Posts : 21
    Windows 11 professional 64bit
    Thread Starter
       #9

    Thanks guys! Appreciate the advice and knowledge
      My Computer


  10. Posts : 4,673
    several
       #10

      My Computer


 

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