I accidentally clicked 'Convert to Dynamic Disk'. Can I undo that?

[OakWrap]

In Disk Management, I accidentally clicked 'Convert to Dynamic Disk'. Can I undo that?
I tried Factory Reset, and I think that's the one thing that it didn't undo.

It doesn't need to be reverted back to GPT; MBR would be just as well.

It's the system disk:
(EFI System Partition) | Windows C: (Boot, Page File, Crash Dump) | (Recovery Partition)

Only the middle partition [Windows C:] is 'mustard'.
The others are still blue.

It's definitely the entire "Disk 0" though. Not just the one partition.

[Nirvana_95]

Hi @OakWrap 

Welcome to the HP Support Community.

I'd like to help! 

May I have the exact model name of the product? Refer to this document for steps to find the product details. Do not share any of your personal information such as serial, phone number, email ID, etc. 

Keep me posted. 

[OakWrap]

HP 15-ep1000 IDS Base Model
I attempted to use AOMEI partition tool to 'convert the dynamic disk back to basic disk',

and the pc immediately lost power, and now the disk doesn't even show up in Command Prompt.
I guess it has deleted the disk?

[Nirvana_95]

It could be possible.

Do you see any signs of power in your system? 

I would suggest you please use the link below and let me know the outcome of it: https://support.hp.com/id-en/document/ish_3974055-3873564-16 

Hope this helps! Keep me posted. 

Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution. 

Click the “Yes" on the bottom right to say “Thanks” for helping. 

[OakWrap · Accepted solution]

I figured it out thanks to all the nuts on youtube:

1: Put 'Ventoy' on a flash drive.
2: Drag & drop the Windows 11 ISO onto the Ventoy USB drive.

3: Download the Intel RST VMD Controller 9A0B driver from Intel. Drag & drop it into the Ventoy flash drive

4: Boot up into Ventoy onto the affected machine.

5: Run the Windows 11 ISO from the menu

6: At the "Where do you want to install Windows?" screen, click 'Load driver'

!!! Here you must navigate using arrow keys, (right arrow and left arrow to open and close folders) to the folder containing the drivers, then press enter when you cannot go any further toward the drivers.

7: Select your driver (in this case, it was the 9A0B, not the 09AB)

8: Now the drives that were previously not visible should appear in the list to choose from, but first....

9: Press Shift + F10 (This opens command prompt)
10: In Command Prompt, type (pressing Enter after every entry):

diskpart
list disk
select disk #
clean
convert gpt
clean
exit
exit

That should close command prompt.

Now press Escape, confirm cancellation.

Click install.

Works perfectly!

You could probably do it without Ventoy, but it certainly has eliminated many headaches for me personally.

Also!
When the PC restarts several times during the installation of Windows, it will of course boot directly to the Ventoy menu.

You simply press F4:Localboot (visible at the bottom of the screen) and then press Enter on "Search Windows boot" (should be the first option in 'Localboot') and the installation will proceed normally.

[Nirvana_95]

That's great!

Thanks for keeping us posted.

Have a nice day ahead.