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After the update KB5063878 for Windows 11 my secondary 8TB Seagate Barracuda (ST8000DMZ04/004, GPT/NTFS) was instantly corrupted and turned RAW. This is not my OS drive – it is a dedicated storage drive with professional projects and databases, now completely inaccessible. Windows Explorer still lists folders, but all files fail to open. This is a critical data loss scenario triggered directly by KB5063878, and I need acknowledgement and a real solution for recovery.
System configuration:
OS: Windows 11 (fully updated before KB5063878).
Update: KB5063878 (triggered the issue).
CPU: AMD Ryzen 9 5950X (16 cores / 32 threads).
RAM: 128 GB.
Storage (affected):
Condition at the time of failure:
Hibernation and Fast Startup were enabled. With 128GB RAM, hiberfil.sys (~100+ GB) was located on the 8TB secondary disk. After applying KB5063878 and rebooting, the 8TB drive immediately showed as RAW instead of GPT/NTFS.
Symptoms:
Windows Explorer still shows folder names, but all files fail to open.
CHKDSK fails with: “The type of the file system is RAW. CHKDSK is not available for RAW drives.”
Windows Disk Management detects the disk but marks it as invalid.
Linux (Ubuntu) also cannot mount the drive.
Recovery tools (R-Studio, DMDE, UFS Explorer) detect sectors but report corrupt MBR and invalid partitions.
Attempts to fix:
Rollback of KB5063878: did not restore the drive.
Third-party recovery scans confirm sectors are present, but the NTFS structure is corrupted.
No hardware issues: BIOS and SMART detect the disk normally.
Impact:
8TB of professional data (SQL Server .mdf/.ldf, DTS packages, Visual Studio projects, sensitive archives) at risk. This is software-induced data loss caused by KB5063878 in combination with hibernation/fast startup on large-capacity GPT/NTFS drives.
I can see my files and navigate thorough them, but when I try to use the opener application indicates that this file or folder don't exist, only 3 files are readable, one of them is an application that run fine from the disk, the same behavior when load the disk on windows 10.
I am reporting this now because since the moment KB5063878 corrupted my 8TB Seagate Barracuda drive I have been forced to focus on urgent attempts to recover my data, without success. The projects stored on this drive are critical, and the time pressure has prevented me from contacting support earlier. At this stage, I urgently request official acknowledgement of this bug and escalation to the Windows engineering team. I need a real technical solution to recover my existing GPT/NTFS data, not just a patch for future cases or generic suggestions. The damage was caused directly by KB5063878 combined with hibernation/fast startup, and my priority is full data recovery.
After the update KB5063878 for Windows 11 my secondary 8TB Seagate Barracuda (ST8000DMZ04/004, GPT/NTFS) was instantly corrupted and turned RAW.
what do you mean instantly raw ? post reboot ? you mean inu manually installed the latest update and it was raw ?
Windows Explorer still shows folder names, but all files fail to open.
how does it still show files and folders if its raw ?
How is this drive connected to your system ?
I need a real technical solution to recover my existing GPT/NTFS data, not just a patch for future cases or generic suggestions.
you restore from backup as you said
8TB of professional data (SQL Server
.mdf/.ldf, DTS packages, Visual Studio projects, sensitive archives) at risk.
is you must have it backed up right ?
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While using windows 11 my NVME corrupted blue screen and become read only cant format anymore why this happened?
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I'll answer you with the details.
To clarify: the update KB5063878 was automatically installed on August 18th at the end of day, after the restart, I turned off the computer because there was nothing open. In August 19th, after a long day of work I hibernated the computer because I had many applications running. On August 20th, after resuming from hibernation, I continued working for a while, but when I tried to save my work it was no longer possible, I received the message that I was referencing a device that does not exist. I immediately attempted to continue working on an open file, but at that point, the system no longer allowed me to save to the drive. Upon further inspection, I found the 8TB Seagate Barracuda (ST8000DMZ04/004, GPT/NTFS) was showing as RAW.
Windows Explorer still lists the folder structure, which suggests that parts of the MFT are still readable, but all files fail to open or save. Out of the entire disk, only three files behave differently:
One executable that runs correctly and can still be copied.
Two text files that can be opened, but any attempt to save changes fails.
Disk analysis shows that all sectors are mapped to the same address in the partition table, which strongly points to metadata corruption rather than total physical failure.
The drive is connected directly via SATA 6Gb/s to the motherboard, no USB/RAID layers.
I do keep backups of critical data, as any professional would. But whether or not I (or others) have backups does not absolve responsibility from whoever introduced a failure in Windows. The fact that this issue has been reported by many other users worldwide shows it is not an isolated case. With or without backups, this corruption should never have happened in the first place.
What I specifically need is:
Confirmation whether this update + hibernation sequence is known to corrupt GPT/NTFS metadata.
Guidance on whether TestDisk, DMDE, R-Studio, or UFS Explorer can safely attempt a partition table/NTFS boot sector rebuild in this scenario.
Evidence from anyone who already faced this issue with KB5063878 and successfully recovered their data.
I’m not asking for a patch “for future cases”, but for a technical recovery path for those already affected.
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Same problem with my system.
I have a Win 11 Pro for WS with four drives formatted in ReFS.
The PC is used as a home server. The drives were pooled together using DrivePool, and the data was mirrored across three drives for redundancy.
Three of those drives were Seagate Exos X16 (16TB) units, and one was an Iron Wolf 10TB.
ALL THREE Exos drives became unreadable and fully corrupted. A reboot showed them to the OS, but all data was lost on all three drives, with only the Iron Wolf showing up.
Reformatting the Exos drives made them visible and usable again, but all of the data was lost. Luckily, I backup to Backblaze as well as to a local OMV NAS, so I didn't lose anything. But thinking it was something to do with drive compatibility, I replaced the Exos with Iron Wolf Drives at a significant enough cost. This is completely unacceptable.
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Same problem here. Two Samsung 870QVO externally attached as USB through SATA-USB cases, that were working perfectly for three years, suddenly disappeared after KB5063878 update.
One of the two seems completly lost (no partition remaining), the other shows none of the previously existing files on the updated Windows 11 computer but the partition is still there and the thefiles are visible if mounted on a WIndows 10 computer.
My problem is identical to you, 8tb mechanical hard drive, all partition entries was overwritten with the same data, all mft are graved with the same LBA direction, I can use only 3 files in distinct locations of the tree of thousands of files, the files are an a batch file (open to edit), .py file and one executable that open and execute normally from the hard drive, everything else is there, I only can see, but I can't open or edit, I can navigate through the whole file tree, in some cases some folders does not open and show the message "a device which does not exist was specified", the same case for the files with a message "the file that you open does not exist", I can't copy files or folders, except if the file is functional, when install the disk in a pc with windows 10 is the same trouble, only 3 files function, the rest only can be viewed
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From
What I’ve read this update can also corrupt external usb connected hard drives. In which case that is your backup also destroyed
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💐🚩SAME HAPPENED TO🚩ME &🚩MILLIONS! PEOPLE!
🚩I INSTALLED 🚩BEST 🚩🚩MOST🚩SECURE LINUX!
🚩WNDOW IS🚩LEAST SECURE!!
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My 4T WD hard drive is not working suddenly. Explorer is showing the drive but I can't access it. Disk Management once show its format RAW. Now it is not accessible at all.
All my external USB drives are not showing up automatically some of them I have to assign a drive letter every time I try to use it. This is very important to know how to fix this.
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John Tran, I'd suggest you start your own thread by creating a new post. Select Ask a question top right of the forum.
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Hi,
My name is Igor, it's a pleasure for me to help others and I'll try to help you. I am merely a fellow user trying to provide insight and information that may be helpful to others.
Was this drive partitioned and formatted using built-in tools or some third-party tools?
Please check drive's health with third-party CrystalDiskInfo tool and show the result.
Run third-party DMDE tool, open the drive as a physical device and show partition table.
Thank you very much Igor for your help, the disk was installed in Windows 10 and partitioned at that time with the disk manager, then I upgraded to Windows 11 without any problem, everything was working fine ... but this Friday 22nd (KB5063878 was automatically installed on August 18th), I turned on the computer to try to do some work and little by little it was prohibiting me from reading and writing files, when I investigated I found out on the internet what was happening but it was too late, the problem is that I have 128 GB of RAM and hibernation is done on this 8 TB disk, I suppose that exceeds the minimum that was established of 50 GB for the failure to occur ... in DMDE the disk is marked as free,
with chkdsk the message is "The volume cannot be opened for direct access" although before it indicated that the disk was in RAW format, so I could not work on it
The BIOS detects the disk correctly, but like CristalDiskInfo, the disk does not appear and cannot be loaded into the system. I installed the disk on a PC with Windows 10 and I see exactly the same as Windows 11. I can navigate without problems. In some folders I can go up to 3 levels, but when trying to open files and other locations, the message appears indicating that it is a disk that does not exist.
In UFS Explorer the disk appears, but indicates that it has no partitions
The situation is getting worse. Before, it appeared that the partition was NTFS, but now it no longer recognizes that there is a partition or data.
I still having access to some folders an subfolders and files but it can't be opened
Thank you very much Igor for your valuable help.
Unfortunately, CrystalDiskInfo window is overlapped and I cannot see it. Please show entire window. And I did not find DMDE result.
Sorry for the inconvenience, in CrystalDiskInfo the menu does not show the damaged 8tb hard disk drive
I better made the language change to English, the drive that not appear is the D
In DMDE the disk fails to read and appears the same message that obtain when navigate through files and folders
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This is not 8 TB drive data. And please open Device manager and show a list of hard drives.
I'll send you what you requested
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In drive;s properties in Devise manager please open Volumes tab, click on Populate, wait the result, and show a screenshot.
this info was generated after click on Populate ("Rellenar" in spanish)...
