Partition disappears in Windows 10 Anniversary Update

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Updated onJuly 31, 2021

updated onJuly 31, 2021

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Microsoft hoped the Windows 10 Anniversary Update would literally bea revelationfor all users, but shortly after installing the update, users encountered various issues. Despite Microsoft’s efforts to anticipate all the possible bugs, the list of complaintsis getting longerevery day.

Many users are reporting that some oftheir partitionssimply disappeared after installing the Anniversary Update. Usually it’s the smallestpartitionthat disappears, although we couldn’t say for sure whether the partition is deleted or if Windows simply doesn’t detect it. Some users are informed that thepartitionis not allocated, while others can detect it once they install partition management apps.

Users complain their partition is gone after Anniversary Update

I began installting the update yesterday evening before going to bed. Now I see that my D: partition is gone. In the disk manager it says “149,05GB Unallocated”. It is a 160GB Intel SSD. I had most applications installed and all my personal files on this partition.

Users report partition won’t mount after Windows 10 Anniversary Update

Since updating to the Anniversary update earlier one of my partitions won’t mount. It’s on a 3TB Seagate ST300DM001 HDD which I have split into 1 2TB partition and 1 1TB partition. The 1TB partition mounts fine however the 2TB doesn’t, this was working fine before the update in Windows 10 and the drive is using GPT.

One program that helps in such situations is theMiniTool Partition Wizard. The program successfully detects the partition, allows users to assign a drive letter and access the partition inFile Explorer.

Other users suggesting installing Acronis Virtual Disk Drive for 2 TB+ drives, and confirmed that in their case the partition magically re-appeared with all the files intact. You can try this workaround as well,download Acronis Virtual Disk Drive, and see if it works for you.

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Partition disappears in Windows 10 Anniversary Update#

Users complain their partition is gone after Anniversary Update#

Users report partition won’t mount after Windows 10 Anniversary Update#

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Outlook will let users create custom account icons so they can tell their accounts apart easier

Partition disappears in Windows 10 Anniversary Update

Users complain their partition is gone after Anniversary Update

Users report partition won’t mount after Windows 10 Anniversary Update