Share via

How do I delete the EFI partition and then expand another partition

Chuck Balogh 21 Reputation points
2025-07-10T03:29:22.5833333+00:00

I first opened this issue in the MicrosoftAnswers community and before I could report back, it was Locked and moved somewhere (message did not indicate where). I was making progress and am pretty close to the end. I hope I am in the right place.

I was given the following instructions in one of the last posts:

|Ramesh Srinivasan [VM] has replied to your question Update Won't Install (error 800f0922). Unable to reload
Windows from media in Microsoft Support Community.| | -------- | |Ramesh Srinivasan [VM] has replied to your question Update Won't Install (error 800f0922). Unable to reload Windows from media in Microsoft Support Community.| |The Recovery partition's size is insufficient to hold the latest winre.wim image. I suggest converting the 356 MB partition to an EFI partition. Once done, delete the 100 MB EFI partition and extend the recovery partition. To convert the 356 MB partition to EFI, open admin Command Prompt and run: diskpart select volume D del part override create partition EFI format fs=fat32 quick assign letter=Y list vol list part exit ·       bcdboot  C:\Windows /s Y: /f UEFI Post the output.|

I was able to follow the instructions butwas unable to post the results because the thread was closed.

Per the instructions, I tried to delete the 100MB partition with diskpart del partition override command but I got an error. I have a screen shot but don't know how to post it.
Ultimately, I am trying to re install the winre.image.

Any help would be greatly appreciated. I would also like to know where my original thread is located.

Windows for business | Windows Client for IT Pros | Devices and deployment | Set up, install, or upgrade
0 comments
Accepted answer
  1. Ramesh Srinivasan 164.8K Reputation points Volunteer Moderator
    2025-07-16T15:42:36.5133333+00:00

    Yes. It looks good. Let me know if you have any questions.

    1 person found this answer helpful.

15 additional answers

Sort by: Most helpful
Most helpful Newest Oldest
  1. Ramesh Srinivasan 164.8K Reputation points Volunteer Moderator
    2025-07-16T07:31:59.66+00:00

    Hi Chuck,

    Can you summarize the current issues you're facing? Did the Windows 11 upgrade go through successfully? More information can be helpful.

    I understand the following steps have been done already:

    • The disk has been successfully converted to GPT (Reference: the Answers thread).
    • A new EFI partition has been created.
    • The 100 MB EFI partition has been removed per Bryce's instructions.

    (Thanks to Bryce, who pinged me about this thread.)

    0 comments
  2. Ramesh Srinivasan 164.8K Reputation points Volunteer Moderator
    2025-07-16T07:35:40.3933333+00:00

    Also, run:

    reagentc /info

reagentc /disable

dir c:\windows\system32\recovery /a

dir c:\recovery\winre.wim /s /a

diskpart

select disk 0

list part

exit

    Post the output.

    0 comments
  3. Chuck Balogh 21 Reputation points
    2025-07-16T14:16:15.8033333+00:00

    Thanks Ramesh. I really do appreciate your help. Here is the output.JFW_1_List part

  4. Chuck Balogh 21 Reputation points
    2025-07-16T14:20:15.0566667+00:00

    Here is the disc management screen shot as well which shows the unallocated space freed up when I deleted the other partition.JFW_1_DiscMgmt

    0 comments

Your answer

Answers can be marked as Accepted Answers by the question author, which helps users to know the answer solved the author's problem.