Missing Partition


Rich A

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Due to a failing battery in a UPS I had an unexpected Windows shut down. After the UPS was repaired I turned on the PC, and noticed the "Windows was not properly shut down" error as I was rechecking the PC. I have a single 1 TB SSD partitioned into 2 500 GB drives and the 2nd drive has vanished. I have Aomei Partition Pro which I'm hoping I can use to recover the missing partition but can't figure it out. Says to select the partition and shows a list of two drives. My system had a C: and D: and now D is gone. I only show one drive and it is the main OS C: drive. I checked and the D: drive is not hidden. So if it's not on the Aomei drive list what's next?

Unfortunately I think there are some "links" or references in the C: drive that are causing big problems because that D: drive can't be found. Has anyone had any experience with that Aomei product? I'm waiting for their support to get back to me, but thought I might find some help here? Thanks ..

- Rich
 
Windows Build/Version
Windows 11 Pro Version 24H2 Installed on ‎12/‎8/‎2024 OS build 26100.4349 Experience Windows Feature Experience Pack 1000.26100.107.0

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Windows 11 Professional (x64) Version 23H2 (build 22631.3737)
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BeeLink Mini PC SEi 8
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Intel i5-8259U
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2 - SPCC 2.5 SSD 512.11 GB SSD
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Rich, take a look at Disk Management and see if it might be as simple as the second partition not having a drive letter assigned to it. If you need details on how to do this let me know and I'll get you some screenshots.
 

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If you have been taking a 'Disk backup' you should be able to restore the whole disk image which would have the D: partition included.

Snipaste_2025-07-04_22-19-26.webp
 

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It happened to me once. The missing D: Drive.

If the drive has not turned RAW, it may just be missing an assigned letter - D.

If that is the case, use Powershell or Command Prompt as administrator.
Type ‘Diskpart’
Then ‘List Volume’

Volume 0 has the assigned letter ‘C’. This is your OS.
Volume 1 does not have an assigned letter. This is your missing ‘D’ Drive.

If that turns out to be the case, do the following.

Type ‘Select Volume 1’
Next ‘Assign’ Letter - D
Press ‘Enter’
Problem solved.

If the missing drive has turned RAW, then you need to re-convert it to NTFS.
 

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Too many laptops with different system specifications.
Hi @Rich A

Your computer specs indicate that you have a 500GB Crucial CT500P3PSSD8 500.11 GB NVMe disk (OS Disk) but you are saying that you have a 1TB disk partitioned as two 500GB drives. Which is correct? ( You also have a Silicon Power 500GB SSD as a secondary disk in your Beelink SEi8)

Whatever
1. Please post a screenshot taken with the AOMEI Partition Assistant Pro. ( Also indicate whether it is a free trial version or a registered version with a licence.)
2. Also post a screenshot of Windows Disk Management.

This will enable us to ascertain the current status and decide on further course of action to resolve the issue.
 

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