Help Determine what partitions are needed

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  1. fireberd
    Posts : 2,585
    Win 11
       New #1

    Help Determine what partitions are needed


    I have a Win 10 installation that originally was Win 8, then upgraded to Win 8.1 Pro and finally upgraded to Win 10. It is now on the current 20H2 version. I know not all partitions are needed. I have a clean Win 10 Pro install (dual boot with this one) and its only one partition for everything.

    I'll make a full disc image (all partitions) before I do anything to the drive.

    Here are two screenshots. One from Windows disk management and the other from Macrium Reflect, Both were made about 10 minutes prior to this post.

    Help Determine what partitions are needed-disk-management.pngHelp Determine what partitions are needed-macrium-screenshot.png
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  3. dalchina
    Posts : 42,984
    Win 10 Pro (22H2) (2nd PC is 22H2)
       New #2

    Hi, I only see one Win 10 installation there with a bunch of Recovery partitions, only 1 of which you need.
    . I have a clean Win 10 Pro install (dual boot with this one) and its only one partition for everything.
    Presumably that's on a different disk.

    To check which Recovery partition is in use, you can use
    reagentc /info
    at an admin command prompt.

    That should show 'Enabled', and the partition number used.
    All other Recovery partitions will be redundant.

    (Another way to check is to explore the Recovery partitions with a 3rd party partition manager. The one with files with the latest creation date should be the one in use.
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  4. fireberd
    Posts : 2,585
    Win 11
    Thread Starter
       New #3

    You are correct the dual boot is a separate disc (NVMe SSD). There are no partitions on this drive.
    Help Determine what partitions are needed-second-drive.png
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  6. Berton
    Posts : 14,019
    Win10 Pro and Home, Win11 Pro and Home, Win7, Linux Mint
       New #4

    fireberd said:
    You are correct the dual boot is a separate disc (NVMe SSD). There are no partitions on this drive.
    A note: all drives need at least one partition so as to be formatted, that Drive C: has one partition, full size and formatted as NTFS.
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  7. fireberd
    Posts : 2,585
    Win 11
    Thread Starter
       New #5

    What I should have said is there are no other partitions like the one I want to remove partitions that are not needed.
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  8. dalchina
    Posts : 42,984
    Win 10 Pro (22H2) (2nd PC is 22H2)
       New #6

    post #2 - identify the Recovery partition in use. Delete the other Recovery partitions.
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  9. Megahertz
    Posts : 6,306
    Windows 11 Pro - Windows 7 HP - Lubuntu
       New #7

    dalchina said:
    post #2 - identify the Recovery partition in use. Delete the other Recovery partitions.
    Be careful. As You have two Win 10, one on the SATA drive and on on the NVMe, you have two active Recovery partitions, one for each Win 10 installation.
    As on the NVMe drive there is no EFI or Recovery partitions, they are on the SATA drive.
    You will have to keep two Recovery partitions on the SATA drive, one for each win 10.
    You have to boot from each Win 10 and find out witch Recovery partition it use on the SATA drive. (reagentc /info) Delete the other partitions.
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  10. dalchina
    Posts : 42,984
    Win 10 Pro (22H2) (2nd PC is 22H2)
       New #8

    Post #1 states:
    and its only one partition for everything.
    so I had assumed that's literally how that installation was created.

    But as you say, caution is advisable.
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  12. fireberd
    Posts : 2,585
    Win 11
    Thread Starter
       New #9

    This is what I got running the reagent from the NVMe Installation.
    Help Determine what partitions are needed-info-new-win10.png
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  13. dalchina
    Posts : 42,984
    Win 10 Pro (22H2) (2nd PC is 22H2)
       New #10

    I had rather assumed your 2nd installation had been created in this fashion:
    How to install Windows in single partition for creating image - CCBoot v3.0 Diskless Boot System
    - just 1 partition.

    I thought I'd seen a tutorial by Kari on something like that..

    How was it created in fact?

    Naturally you can also inspect your partitions using a 3rd party partition manager, just to be on the safe side.
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