Recovery partitions on SSD

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  1. Posts : 5,478
    2004
       #21

    If your OCD is kicking in then you have to find yourself the correct answer and stop looking at GUI front ends.

    Download gdisk and have a look.
    Code:
    C:\Users\Hali\OneDrive\Programs\Gdiskgdisk64.exe 0:
    GPT fdisk (gdisk) version 1.0.0
    
    Partition table scan:
      MBR: protective
      BSD: not present
      APM: not present
      GPT: present
    
    Found valid GPT with protective MBR; using GPT.
    
    Command (? for help): p
    Disk 0:: 236978176 sectors, 113.0 GiB
    Logical sector size: 512 bytes
    Disk identifier (GUID): 94EB0CDB-062F-4EF9-BDED-04F144D52C7C
    Partition table holds up to 128 entries
    First usable sector is 34, last usable sector is 236978142
    Partitions will be aligned on 8-sector boundaries
    Total free space is 264277 sectors (129.0 MiB)
    
    Number  Start (sector)    End (sector)  Size       Code  Name
       1              40         1024039   500.0 MiB   2700
       2         1024040         1433639   200.0 MiB   EF00  EFI
       3         1435648         1468415   16.0 MiB    0C01  Microsoft reserved ...
       4         1468416        69982207   32.7 GiB    0700  Basic data partition
       5        69982208       186220543   55.4 GiB    0700  Data
       6       186482800       235708599   23.5 GiB    AF00  El Capitan
       7       235708600       236978135   619.9 MiB   AB00  Recovery HD
    
    Command (? for help):
    What you have (from your euseus screen print) is someones interpretation of the GPT partition table.

    What you get from disk management is less (as it deliberately ignores some partition types).

    You also need to consider is some OS or partition programs don't like the end of previous partition to bang up against the start of the next (so they leave 128MB or so).

    You can check this by comparing the number of the end one sector and the start of the next and seeing if the is a difference is 1 or not.

    Without a doubt the best place to check (or learn) about how this works is here
      My Computer


  2. Posts : 15,485
    Windows10
       #22

    The 128 MB partition is always there. It is deliberately hidden in disk management. The other tiny unallocated spaces are simply to ensure new partitions start on proper zone boundaries.

    No more changes should be made.
      My Computer


  3. Posts : 2,799
    Linux Mint 20.1 Win10Prox64
       #23

    cereberus said:
    The 128 MB partition is always there. It is deliberately hidden in disk management. The other tiny unallocated spaces are simply to ensure new partitions start on proper zone boundaries.

    No more changes should be made.
    What are we talking here ? Windows 8 or Windows 10 ? In Windows 10 fresh install, there's only 16MB MSR reserved partition. Not 128MB.
      My Computer


  4. Posts : 44
    Microsoft Windows 10 Home 64-bit
    Thread Starter
       #24

    Windows 10.

    I understand and accept the view that no further changes should be made it's just that I hate to see nearly 2GB of disk space going begging particularly as I bought the largest SSD that Dell offered and that is already half full and I've only had it a week.
      My Computer


  5. Posts : 15,485
    Windows10
       #25

    topgundcp said:
    What are we talking here ? Windows 8 or Windows 10 ? In Windows 10 fresh install, there's only 16MB MSR reserved partition. Not 128MB.
    Wrong. For Eufi, the MSR is 128MB see

    Understanding Disk Partitions
      My Computer


  6. Posts : 15,485
    Windows10
       #26

    norman said:
    Windows 10.

    I understand and accept the view that no further changes should be made it's just that I hate to see nearly 2GB of disk space going begging particularly as I bought the largest SSD that Dell offered and that is already half full and I've only had it a week.
    Actually, you could delete the last one.

    You will always have up to 1GB used by the three small partitions.
      My Computer


  7. Posts : 44
    Microsoft Windows 10 Home 64-bit
    Thread Starter
       #27

    But I have a 700GB a 300GB as well as the WINRETOOLS partition which is 867MB. The first two are unused and unallocated.
      My Computer


  8. Posts : 2,799
    Linux Mint 20.1 Win10Prox64
       #28

    cereberus said:
    Wrong. For Eufi, the MSR is 128MB see

    Understanding Disk Partitions
    Try to install Windows 10 fresh then come back and tell me that I am wrong.
    You are referring to an article that was published in 2009. Things have changed.
      My Computer


  9. Posts : 15,485
    Windows10
       #29

    topgundcp said:
    Try to install Windows 10 fresh then come back and tell me that I am wrong.
    You are referring to an article that was published in 2009. Things have changed.
    Please accept my humble apologies - you are indeed correct.

    From memory, it actually used to be 16GB for small drives and 128GB for large drives. I wonder what is different about Windows 10 that enabled the change?

    In case of an upgrade, of course, it still uses the old MSR 128MB partition. Obviously so small, not worth worrying about.
      My Computer


  10. Posts : 12
    Windows 10
       #30

    cereberus said:
    Wrong. For Uefi, the MSR is 128MB see

    Understanding Disk Partitions
    SOURCE: https://msdn.microsoft.com/en-us/lib...(v=vs.85).aspx

    UEFI/GPT-based hard drive partitions

    Microsoft® reserved partition (MSR)
    Beginning in Windows 10, the size of the MSR is 16 MB.
      My Computer


 

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