UEFI/GPT Windows 10 fresh install, some questions on diskpart and ESP

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  1. Posts : 25
    Windows 10 Professional
    Thread Starter
       #11

    NavyLCDR said:
    Then don't do anything at all to the new drive. Just boot the computer from a Windows 10 installation USB flash drive in UEFI mode and install the first Windows 10 to the completely blank, unallocated SSD.
    Clear, and how many partitions will I see in Disk Management?

    I ask because according to this user partitioning - What is this Recovery Partition for on a fresh installation of Windows? - Super User my current set up(attached) with Windows 10/BIOS/MBR should have three partitions: System, Windows(Primary) and Recovery(WinRE) but I only have one. Is this because I used diskpart?
    Attached Thumbnails Attached Thumbnails UEFI/GPT Windows 10 fresh install, some questions on diskpart and ESP-current.jpg  
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  2. Posts : 7,606
    Windows 10 Home 20H2
       #12

    UEFI/GPT Windows 10 fresh install, some questions on diskpart and ESP-system-disk.jpg

    UEFI/GPT Windows 10 fresh install, some questions on diskpart and ESP-disk.jpg
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  3. Posts : 161
    Windows 11
       #13

    tenuser1967 said:
    This time around the drive will be 100% new(SSD).
    My preference is to have a separate partition for data. A smaller partition for the OS means backing it up or restoring takes less time, and requires less backup space. It also allows a clean install to be performed without affect your data.

    If you take this approach make sure that you relocate the Documents, Downloads, Music, Pictures, and Videos from the C: drive to the data drive (via Properties, Location), or do not use these folders.
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  4. Posts : 25
    Windows 10 Professional
    Thread Starter
       #14

    Matthew Wai said:
    ...
    What is the 16MB Reserved partition? It's ok, it's the MSR.

    quandary said:
    If you take this approach make sure that you relocate the Documents, Downloads, Music, Pictures, and Videos from the C: drive to the data drive (via Properties, Location), or do not use these folders.
    I agree, on machines with two drives I keep data on the d:\, if the machine has only one drive I just keep data in a folder but take a daily backups to be safe.
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  5. Posts : 161
    Windows 11
       #15

    tenuser1967 said:
    What is the 16MB Reserved partition?
    Also, of the three marked with *, which ones are absolutely necessary? For example I always end up with the Recovery Partition after a Windows Feature update but I remove it straight away (it causes issues when taking Macrium images).
    The first * partition contains the EFI controls, the second * is a Microsoft Reserve partition required for booting, and the third * is the Recovery partition.

    They are all created when Windows was installed. The Recovery partition, if deleted, will be recreated by Feature update. It is used for recovery purposes but is not necessary if you can perform a system restore from an image copy. It does not require much space to I keep it around.

    No idea why you should have any issue with the Recovery when doing Macrium image copies (something you should resolve). I make an image copy of the three * partitions (only requires 560,000KB), and separate image copies of the C: after any major changes. I have never had to restore any of the * partitions, but have performed multiple restores of the C: partition, all without any issues.
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  6. Posts : 25
    Windows 10 Professional
    Thread Starter
       #16

    quandary said:
    The first * partition contains the EFI controls, the second * is a Microsoft Reserve partition required for booting, and the third * is the Recovery partition.
    This is now clear, apologies for editing my earlier post, what I still find funny is that my current system I attached earlier(again, BIOS/MBR) has no MSR (Microsoft Reserved Partition) and I never had any particular issues.

    quandary said:
    No idea why you should have any issue with the Recovery when doing Macrium image copies (something you should resolve).
    I do remember trying to take an image of the Primary partition after a Feature Update and it stopped with an error, that unfortunately I can't remember. I did some Googling, deleted the Recovery Partition with diskpart's "delete partition override" and then the image was taken correctly.
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  7. Posts : 161
    Windows 11
       #17

    tenuser1967 said:
    This is now clear, apologies for editing my earlier post, what I still find funny is that my current system I attached earlier(again, BIOS/MBR) has no MSR (Microsoft Reserved Partition) and I never had any particular issues.


    I do remember trying to take an image of the Primary partition after a Feature Update and it stopped with an error, that unfortunately I can't remember. I did some Googling, deleted the Recovery Partition with diskpart's "delete partition override" and then the image was taken correctly.
    No apologies necessary. The MSR is required with UEFI-based PC's and not one with BIOS/MBR.
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  8. Posts : 25
    Windows 10 Professional
    Thread Starter
       #18

    quandary said:
    No apologies necessary. The MSR is required with UEFI-based PC's and not one with BIOS/MBR.
    Now it all makes sense.

    At this stage I have one very last question left(hopefully). If I don't want the Recovery partition, am I right in saying that my options are either one of the below:

    a) Proceed as suggested by NavyLCDR, no diskpart, I install in "Drive 0 Unallocated Space). When done, I go in Windows and remove it manually with diskpart's "delete partition override".

    b) I use diskpart with Shift+F10 during installation. I create the 100MB EFI, the 16MB MSR but I don't create the partition with ID "de94bba4-06d1-4d40-a16a-bfd50179d6ac".
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  9. Posts : 161
    Windows 11
       #19

    Use option a), just install in unallocated space. Do not do anything with the Recovery partition unless you specifically find a problem (highly unlikely). Do you really need that extra space, if not just leave it alone.
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  10. Posts : 7,606
    Windows 10 Home 20H2
       #20

    quandary said:
    They are all created when Windows was installed.
    I have never installed Windows on my USB HDD, which has the same reserved partition created automatically by DiskPart when I ran this command "Convert GPT".
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