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  1.    13 Oct 2017 #1
    Join Date : Jun 2015
    UK
    Posts : 2,091
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)

    How to Reconfigure Creators Update Recovery Partition?


    My Dell Inspiron 7537 laptop running W10 Home finally updated via Windows Update yesterday!

    All is fine but I noticed a new 924MB recovery partition has been added to the end of the drive making the original 450MB recovery partition at the start of the drive redundant (see drive map).

    I could use MiniTool Partition Wizard (MPW) to delete the first 450MB recovery partition, move the 99MB and 16MB system partitions 2 & 3 to the start of the drive then expand the main OS partition to use up the space released.

    Will relocating the system partitions 2 & 3 using MPW cause any problems such as rendering the PC unbootable? Is there a recommended way of deleting the original recovery partition and recovering the disk space?

    Click image for larger version. 

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    Last edited by Steve C; 13 Oct 2017 at 01:32.
      My ComputersSystem Spec
  2.    13 Oct 2017 #2
    Join Date : Jul 2015
    Posts : 3,712
    10 Pro

    Quote Originally Posted by Steve C View Post
    I could use MiniTool Partition Wizard (MPW) to delete the first 450MB recovery partition, move the 99MB and 16MB system partitions 2 & 3 to the start of the drive then expand the main OS partition to use up the space released.
    That is exactly the order MS recommend.

    The new partition layout resembles the traditional partition layouts from Windows 8.1, except the Windows RE partition is now moved to the end of the drive, and there is no longer a need for a separate full-system recovery partition.
    Click image for larger version. 

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    Manufacturing Windows Engineering Guide | Microsoft Docs

    Quote Originally Posted by Steve C View Post
    Will relocating the system partitions 2 & 3 using MPW cause any problems such as rendering the PC unbootable? Is there a recommended way of deleting the original recovery partition and recovering the disk space?
    It will certainly boot if you rearrange your partitions like that.

    It isn't terribly important as you don't really need a recovery partition if you have a installation USB but for completeness after you have finished moving the partitions you will need to use the reagentc command to reregister the WinRE image. Currently it is partition 5 - if you delete a partition the recovery image will be in in partition 4. It is described here Deploy Windows RE | Microsoft Docs

    Esentially you temporarily assign the recovery partition a letter (eg T) in diskpart

    • diskpart
    • select disk 0
    • select partition 4
    • assign letter=T


    Then reregister the WinRE image from command prompt

    • Reagenc /disable
    • Reagentc /setreimage /path T:\Recovery\WindowsRE /target C:\Windows
    • Reagenc /enable
    • Reagentc /info
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  3.    13 Oct 2017 #3
    Join Date : Jun 2015
    Posts : 1,905
    Windows 3.1 to Windows 10

    Just curious, what did they include in the 925mb recovery partition, that partition is twice the prior size
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  4.    14 Oct 2017 #4
    Join Date : Jun 2015
    UK
    Posts : 2,091
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)
    Thread Starter

    Quote Originally Posted by Kyhi View Post
    Just curious, what did they include in the 925mb recovery partition, that partition is twice the prior size
    Most of the space is taken up by winre.wim but only 61% of the partition space is used:

    Click image for larger version. 

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      My ComputersSystem Spec
  5.    14 Oct 2017 #5
    Join Date : Dec 2015
    Posts : 5,917
    Windows10

    Quote Originally Posted by Kyhi View Post
    Just curious, what did they include in the 925mb recovery partition, that partition is twice the prior size
    Size often seems a bit random when at end of drive - never worked out why.
      My ComputerSystem Spec
  6.    14 Oct 2017 #6
    Join Date : Oct 2016
    Posts : 134
    Microsoft Windows 10 x64

    Code:
    DISKPART> list part
    
      Partition ###  Type              Size     Offset
      -------------  ----------------  -------  -------
      Partition 1    Reserved           128 MB    17 KB (MSR)
      Partition 2    System             200 MB   129 MB (EFI)
      Partition 3    Primary            464 GB   329 MB (Windows)
      Partition 4    Recovery          1000 MB   464 GB (Recovery)
    
    DISKPART>
    I created the partition manually as above

    The partition 1 "Reserved" is created automatically by "convert GPT"
    then I did not create 16MB MSR which seems useless

    Any advice ?
      My ComputerSystem Spec
  7.    14 Oct 2017 #7
    Join Date : Jul 2015
    Posts : 3,712
    10 Pro

    Quote Originally Posted by Steve C View Post
    Most of the space is taken up by winre.wim but only 61% of the partition space is used:
    WinRE is bigger than standard. Mine is 362 while yours is 554. Perhaps it has some customisations.

    The rules for Recovery partition size have big jumps based on the size of the WinRE.wim
    This partition must have enough space for the Windows Recovery Environment tools image (winre.wim, typically between 250-300MB, depending on base language and customizations added), plus enough free space so that the partition can be captured by backup utilities:
    If the partition is less than 500 MB, it must have at least 50 MB of free space.
    If the partition is 500 MB or larger, it must have at least 320 MB of free space.
    If the partition is larger than 1 GB, we recommend that it should have at least 1 GB free.
    UEFI/GPT-based hard drive partitions | Microsoft Docs

    568+320 = 878 which is about 924. More or less
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  8.    14 Oct 2017 #8
    Join Date : Jul 2015
    Posts : 3,712
    10 Pro

    Quote Originally Posted by D4ni3l View Post
    Code:
    DISKPART> list part
    
      Partition ###  Type              Size     Offset
      -------------  ----------------  -------  -------
      Partition 1    Reserved           128 MB    17 KB (MSR)
      Partition 2    System             200 MB   129 MB (EFI)
      Partition 3    Primary            464 GB   329 MB (Windows)
      Partition 4    Recovery          1000 MB   464 GB (Recovery)
    
    DISKPART>
    I created the partition manually as above

    The partition 1 "Reserved" is created automatically by "convert GPT"
    then I did not create 16MB MSR which seems useless

    Any advice ?
    128MB reserved is created when you format GPT disk but you can delete it. You certainly don't need it on system disk and I don't think you need it on data disks either as OSX doesn't create it and these disks work fine with Windows.

    I'd put EFI first. 200MB is fine although 100MB is probably sufficient unless you are dual booting. I dual boot with OSX and it expects a 200MB ESP.

    Probably you are right and the MSR is useless (Windows seems to work OK without) but MS say to create it so I do - it should come before C and be 16MB only. Perhaps it will be required for something in future.

    3 and 4 look OK.

    There is a script for doing it here which includes the GPT flags etc you need to set
    Code:
    rem == CreatePartitions-UEFI.txt ==
    rem == These commands are used with DiskPart to
    rem    create four partitions
    rem    for a UEFI/GPT-based PC.
    rem    Adjust the partition sizes to fill the drive
    rem    as necessary. ==
    select disk 0
    clean
    convert gpt
    rem == 1. System partition =========================
    create partition efi size=100
    rem    ** NOTE: For Advanced Format 4Kn drives,
    rem               change this value to size = 260 ** 
    format quick fs=fat32 label="System"
    assign letter="S"
    rem == 2. Microsoft Reserved (MSR) partition =======
    create partition msr size=16
    rem == 3. Windows partition ========================
    rem ==    a. Create the Windows partition ==========
    create partition primary 
    rem ==    b. Create space for the recovery tools ===
    shrink minimum=500
    rem       ** NOTE: Update this size to match the
    rem                size of the recovery tools 
    rem                (winre.wim) plus free space                   **
    rem ==    c. Prepare the Windows partition ========= 
    format quick fs=ntfs label="Windows"
    assign letter="W"
    rem === 4. Recovery tools partition ================
    create partition primary
    format quick fs=ntfs label="Recovery tools"
    assign letter="R"
    set id="de94bba4-06d1-4d40-a16a-bfd50179d6ac"
    gpt attributes=0x8000000000000001
    list volume
    exit
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  9.    14 Oct 2017 #9
    Join Date : Jun 2015
    UK
    Posts : 2,091
    Windows 10 Home x64 (Laptop), Windows 10 Pro x64 (Desktop)
    Thread Starter

    Quote Originally Posted by lx07 View Post
    WinRE is bigger than standard. Mine is 362 while yours is 554. Perhaps it has some customisations.
    No customisations. I just let Windows Update upgrade to the CU and the larger partition at the end of the drive is what it decided to install.
      My ComputersSystem Spec
  10.    14 Oct 2017 #10
    Join Date : Oct 2016
    Posts : 134
    Microsoft Windows 10 x64

    thanks for your help, lx07

    still thinking about this

    I am now convinced I will remove the Recovery partition and put WinRE in "C:\Recovery" directory which exists in standard installation
    In case of problem on main Windows partition, WinPE on USB key is a also a good recovery
      My ComputerSystem Spec

 
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