Windows 10: what partitions does windows automatically create during instalation Solved

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  1.    18 Dec 2015 #1

    what partitions does windows automatically create during instalation


    i already have my pc updated with windows 10, i recently upgraded my hard drive with a samsung 850 pro ssd but i discovered that my recovery partition no longer works and when i try to do a system image windows says it cannot do it because files are missing . i used the samsung data migration software that came with my ssd, when i go to disk management it shows my three partitions which are

    500mb recovery partition

    260mb efi system partition

    windows c 476.18 gb ntfs , boot,page file, crash dump, primary partition

    my question is if i do a clean instal of windows 10 will these partitions be created again during the windows 10 installation automatically or will i loose some . i'm no computer expert so i don't know which ones i really need . i want to be able to recover my pc should i need to and have everything working . someone suggested that i dont need a recovery partition and windows 10 does not create new partitions . i don't know what the efi system partition is and don't know if i need it . i have watched some youtube videos of people doing clean installs of windows 10 and they all seem to differ . during installation when given the choice of where to install windows some people delete all the partitions on their hard drive while others pick which one . can anyone give me a guide and bear in mind i am no expert , which partitions do i really need , my pc came with the 3 partitions listed above, any help would be much appreciated
      My System SpecsSystem Spec

  2. topgundcp's Avatar
    Posts : 1,986
    Ubuntu14.04x64 MintMate17x64 Win10Prox64
       18 Dec 2015 #2

    Windows will create 4 partitions:
    1. 450MB Recovery
    2. 100MB EFI System (Hidden from disk management)
    3. 16MB MSR
    4. The rest is your C: Drive

    Just follow this link to fresh install:
    Solved Gone forever? - Page 2 - Windows 10 Forums
      My System SpecsSystem Spec

  3. Ztruker's Avatar
    Posts : 4,542
    Windows 10 Pro X64 14393.576
       18 Dec 2015 #3

    MBR and GPT must have an effect as my 250GB SSD has 3 partitions and is GPT:

    450MB Recovery
    100MB EFI
    232+GB C:

    This was doing a clean install deleting all partitions and letting the installer create the partitions it wanted.
      My System SpecsSystem Spec

  4. Word Man's Avatar
    Posts : 1,177
    Windows 10 Home
       18 Dec 2015 #4

    Ztruker said: View Post
    MBR and GPT must have an effect as my 250GB SSD has 3 partitions and is GPT:

    450MB Recovery
    100MB EFI
    232+GB C:

    This was doing a clean install deleting all partitions and letting the installer create the partitions it wanted.
    Hey, Ztruker, are you sure you have no MSR? Disk Management won't show it, but diskpart commands will.
      My System SpecsSystem Spec

  5. Ztruker's Avatar
    Posts : 4,542
    Windows 10 Pro X64 14393.576
       18 Dec 2015 #5

    Code:
    C:\Users\rrkurtz>diskpart
    
    Microsoft DiskPart version 10.0.10586
    
    Copyright (C) 1999-2013 Microsoft Corporation.
    On computer: DESKTOP
    
    DISKPART> list disk
    
      Disk ###  Status         Size     Free     Dyn  Gpt
      --------  -------------  -------  -------  ---  ---
      Disk 0    Online          232 GB  1024 KB        *
      Disk 1    Online         1863 GB  1024 KB        *
      Disk 2    Online         1397 GB  1024 KB
      Disk 3    No Media           0 B      0 B
      Disk 4    No Media           0 B      0 B
    
    DISKPART> sel disk 0
    
    Disk 0 is now the selected disk.
    
    DISKPART> list par
    
      Partition ###  Type              Size     Offset
      -------------  ----------------  -------  -------
      Partition 1    Recovery           450 MB  1024 KB
      Partition 2    System             100 MB   451 MB
      Partition 3    Primary            232 GB   551 MB
    
    DISKPART> detail disk
    
    Samsung SSD 840 EVO 250GB
    Disk ID: {E4BF3C3A-B75D-48A2-A7C0-2860DEE59991}
    Type   : SATA
    Status : Online
    Path   : 0
    Target : 0
    LUN ID : 0
    Location Path : PCIROOT(0)#PCI(1F02)#ATA(C00T00L00)
    Current Read-only State : No
    Read-only  : No
    Boot Disk  : Yes
    Pagefile Disk  : Yes
    Hibernation File Disk  : No
    Crashdump Disk  : No
    Clustered Disk  : No
    
      Volume ###  Ltr  Label        Fs     Type        Size     Status     Info
      ----------  ---  -----------  -----  ----------  -------  ---------  --------
      Volume 1     C   Lenovo_C     NTFS   Partition    232 GB  Healthy    Boot
      Volume 2                      RAW    Partition    450 MB  Healthy    Hidden
      Volume 3                      FAT32  Partition    100 MB  Healthy    System
    
    DISKPART>
      My System SpecsSystem Spec

  6. Word Man's Avatar
    Posts : 1,177
    Windows 10 Home
       18 Dec 2015 #6

    OK, thanks, Rich - it's surprising to me that a clean install would come out that way - every day I find a puzzle to attack here at TenForums. Any idea why you got this as opposed to the widely described and discussed inclusion of the 16 MB MSR for Win10 ?
      My System SpecsSystem Spec

  7. topgundcp's Avatar
    Posts : 1,986
    Ubuntu14.04x64 MintMate17x64 Win10Prox64
       18 Dec 2015 #7

    Word Man said: View Post
    OK, thanks, Rich - it's surprising to me that a clean install would come out that way - every day I find a puzzle to attack here at TenForums. Any idea why you got this as opposed to the widely described and discussed inclusion of the 16 MB MSR for Win10 ?
    Well. In one of his post, he deleted the 16MB MSR partition because he thinks it's not needed and saves 16MB..

    @OP
    For a fresh install. There must be 4 partitions as mentioned above
    Last edited by topgundcp; 19 Dec 2015 at 08:56.
      My System SpecsSystem Spec

  8. Ztruker's Avatar
    Posts : 4,542
    Windows 10 Pro X64 14393.576
       18 Dec 2015 #8

    Now that you mention it, I do remember deleting two partitions I "thought" I didn't need. I'd completely forgotten about that. I used EaseUS Partition Manager and deleted the 16MB and 1.48GB partitions. This is what it looked like then:

    Click image for larger version. 

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    Maybe I should do it one more time, only leave everything once I do a clean install after deleting all partitins on the drive and letting the Windows installer create what it wants.

    Backup C:
    Clean Install deleting all partitions
    Restore C:
    Fix boot error with Macrium.

    That's what I did before and it worked great.
      My System SpecsSystem Spec

  9.    18 Dec 2015 #9

    topgundcp said: View Post
    Windows will create 4 partitions:
    1. 450MB Recovery
    2. 100MB EFI System (Hidden from disk management)
    3. 16MB MSR
    4. The rest is your C: Drive

    Just follow this link to fresh install:
    Solved Gone forever? - Page 2 - Windows 10 Forums

    well i downloaded windows 10 on to a usb stick and followed the directions in the link but in diskpart it would not let me clean the c drive . so what i did is rebooted the pc and went in to boot manager and selected usb as boot and it all went smoothly after that and during the set up i just deleted all the partitions on the c drive until only the unallocated drive was remaining and selected that . in diskpart though, the steps you gave me was missing steps i had to type in, in order to try and clean the drive . i had to watch a youtube video which gave me the additional criteria i had to type in . windows created all the new partitions as you said they would so thank you for your help
      My System SpecsSystem Spec

  10.    18 Dec 2015 #10

    Hi,

    On all the EFI/GPT clean installs I did so far the partition scheme turned out like this. Ignoring partition #5 which was created by myself afterwards.
    I possibly also moved the Recovery partition so it sits in front of the C:\ drive in case I need to expand that one.
    Note the 128Mb partition which I suppose is the MSR partition created when a drive is converted to GPT.

    Question is, why 128 Mb and not 16Mb ? Assuming this is the same MSR partition mentioned by you guys.

    TIA,
    Attached Thumbnails Attached Thumbnails Partition Layout.png  
      My System SpecsSystem Spec


 
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