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I want to add a partition to my main disk, the one that has C drive. I am running Windows 10. Currently, to the right of the C drive I have my Recovery partition. I do know how to shrink the C drive and then move the Recovery partition to the left of the empty space. But if I do that, experience shows that the Recovery environment will become disabled, and I will get the error “Could not find the recovery environment” if I try to reset Windows. Is there a way I can add a partition but not mess up the Recovery environment? Or is that just the way it is?

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  • Why not just use Windows to re-partition the disk. Use less space for the Data partition if you wish to do this.
    – anon
    Commented Nov 3, 2023 at 12:55
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    Why are you moving the recovery partition. Shrink the C drive, and create a new partition in freed space without moving the recovery partition.
    – cybernard
    Commented Nov 3, 2023 at 13:53
  • The problem I am dealing with is that Windows doesn't find the recovery partition anymore, if it is no longer adjacent to the C drive, where it used to be.
    – shmu
    Commented Nov 4, 2023 at 16:33

2 Answers 2

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The Recovery partition can be moved, but the procedure is a bit complicated. You will find it described in detail in the article Moving Windows Recovery Partition Correctly, so here is just the summary:

  • Disable the Recovery partition : reagentc /disable.
    This will move it into the file C:\Windows\System32\Recovery\Winre.wim.
  • Run diskpart in CMD as Admin, select disk and Recovery partition and delete it via delete partition override.
  • Use Disk Management to resize partition C: and create any new partition you like, leaving about 1 GB of unallocated space.
  • Still in Disk Management, create a new Simple Volume over the unallocated space without a drive-letter.
  • In diskpart, select the new partition and:
    • For a GPT disk (MBR is described in the article), set the partition as a Recovery partition:
      set id=de94bba4-06d1-4d40-a16a-bfd50179d6ac
    • Hide and flag as a required partition:
      gpt attributes=0x8000000000000001
    • exit diskpart
  • Re-enable the recovery partition : reagentc /enable.

I suggest before starting, to create a backup image of the disk and have a boot USB that can restore it in emergency. One such tool is AOMEI Backupper Freeware and Create AOMEI Bootable CD/DVD/USB Based on Windows PE.

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use right click and run diskmanager built in windows; use resize main partion; apply; if all good now you can create new partion on empty slot;

if not able to resize sys drive - free some space in windows; remove not needed files; clean tmp etc;

if still windows lock something and not able to resize - use free acronis version or partition magic apps; that tools also can crate bootable cd or usb...

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