1.    06 May 2017 #1
    Join Date : May 2017
    Posts : 1
    windows 10 home

    Windows 10 without system reserved partitions


    Hi can anybody please explain these two questions:
    A- How many are the partitions that windows 10 automatically creates during installation, what are they for and what is it stored in them?
    B- if I choose not to have them (for example by creating the windows partition with another software before installing windows 10) are there drawbacks, does windows run exactly the same as having them?
    thank you!
      My ComputerSystem Spec
  2.    06 May 2017 #2
    Join Date : Jan 2015
    UK, Midlands
    Posts : 11,025
    Win 10 Pro (1703)

    Here's the typical Win 10 UEFI partition layout:
    UEFI/GPT-based hard drive partitions

    Click image for larger version. 

Name:	Snap 2017-05-06 at 12.08.31.jpg 
Views:	3 
Size:	32.1 KB 
ID:	133733

    The System partition -16Mb
    What is the System Reserved Partition and Can You Delete It?

    The Recovery partition - 450Mb- supports automatic repair and Advanced Troubleshooting tools.

    EFI partition: (shown as MSR above) - 100Mb
    windows 10 - What is an EFI system partition? - Super User

    These are small - why would you go to the trouble of thinking about removing them anyway?

    Note the partition layout for legacy BIOS based Windows 10 is different.
      My ComputerSystem Spec
  3.    06 May 2017 #3
    Join Date : Oct 2014
    Arnold, MD
    Posts : 29,042
    Triple boot - Win 10 Pro, Win 10 Pro Insider (2) - (and a sprinkling of VMs)

    Quote Originally Posted by dalchina View Post
    Here's the typical Win 10 UEFI partition layout:
    UEFI/GPT-based hard drive partitions

    Click image for larger version. 

Name:	Snap 2017-05-06 at 12.08.31.jpg 
Views:	3 
Size:	32.1 KB 
ID:	133733

    The System partition -16Mb
    What is the System Reserved Partition and Can You Delete It?

    The Recovery partition - 450Mb- supports automatic repair and Advanced Troubleshooting tools.

    EFI partition: (shown as MSR above) - 100Mb
    windows 10 - What is an EFI system partition? - Super User

    These are small - why would you go to the trouble of thinking about removing them anyway?

    Note the partition layout for legacy BIOS based Windows 10 is different.
    Not to say dangerous, too.
      My ComputersSystem Spec
  4.    06 May 2017 #4
    Join Date : Jul 2015
    Posts : 9,409
    Windows 10 Pro

    Some people have had problems with Windows Updates failing when they have not had the standard System partition they were booting from.
      My ComputerSystem Spec
  5.    06 May 2017 #5
    Join Date : Mar 2017
    Posts : 5,829
    64-bit Windows 10 Pro

    I use a legacy BIOS and I have only one partition. Windows creates a recovery partition but I delete it and extend drive C:\. If I recover anything I use Macrium Reflect to do it.
      My ComputerSystem Spec
  6.    06 May 2017 #6
    Join Date : Sep 2014
    Nashville, TN
    Posts : 3,143
    Windows 10 Pro

    Quote Originally Posted by wiss1 View Post
    Hi can anybody please explain these two questions:
    A- How many are the partitions that windows 10 automatically creates during installation, what are they for and what is it stored in them?
    B- if I choose not to have them (for example by creating the windows partition with another software before installing windows 10) are there drawbacks, does windows run exactly the same as having them?
    thank you!
    This question is unanswerable, because it starts with a false premise. The number of partitions created by Windows varies depending on the type of BIOS and/or type of boot being done. If you boot using a legacy BIOS, only one partition will be created. If you boot from an EFI bios using an EFI boot, then it will create 3 by default. A 4th partition is possible, for recovery, but it is not automatically created by default.
      My ComputerSystem Spec

 


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