Can I delete the MSR 128mb partition?


  1. AlphaUMi
    Posts : 60
    Windows 10 Home x64
       New #1

    Can I delete the MSR 128mb partition?


    The title says it all. In addition, I have 1903 but this partition is on my hard disk from ages. it is the Microsoft Reserved Partition, and it is exactly 128mb. Can I safely delete it?
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  3. Bree
    Posts : 31,666
    10 Home x64 (22H2) (10 Pro on 2nd pc)
       New #2

    AlphaUMi said:
    ...it is the Microsoft Reserved Partition, and it is exactly 128mb.


    Then you must have upgraded from Windows 8/8.1. For a clean install of Windows 10 the MSR would only be 16MB.


    Beginning in Windows 10, the minimum size of the MSR is 16 MB which the installer allocates by default
    Microsoft Reserved Partition - Wikipedia


    Can I safely delete it?

    There are differing opinions on that. Some report deleting it with no apparent ill effect. I've never tried. Read that Wikipedia link and this post, then make your choice....


    Convert dual boot disk into single OS - post #22
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  4. hsehestedt
    Posts : 4,187
    Windows 11 Pro, 22H2
       New #3

    Personally, I wouldn't delete it even if you can. If you are that short on space that 128MB makes any difference to you, then IMHO, you probably need larger drive
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  6. Stigg
    Posts : 623
    Windows 10 Pro
       New #4

    You will notice when you install a secondary drive on a Windows 10 computer that Disk Management creates a 16 MB MSR partition. I always delete it on my backup drives. I've never had a problem.
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  7. eLPuSHeR
    Posts : 2,935
    Windows 10 Home x64
       New #5

    Why not resizing it to 16MB?
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