I've read many times Windows 10 update could cause a partition to disappear and that was exactly what happened to me yesterday after I clicked on Shutdown at the Windows login screen.
After that there was a boot loop at Predator screen. I used boot USB to boot Windows PE and my c: partition was showing as d:, RAW, 0 bytes. My d: disk was showing as c: and is working without errors. I can see EFI and recovery partitions on the primary drive, only c: partition is showing as RAW.
I used Alt+F10 to boot into the recovery console but Startup recovery couldn't solve the problem. I tried Uninstall quality update option but that didn't solve the problem either. Uninstall feature update option reported a problem. Using cmd dir couldn't list the files od c: partition because of "There isn't a file system" error.
Acronis Disk Director recognizes the partition as c:, Healthy, NTFS, boot and can show all the files which might mean the GPT table should be rebuilt.
I am suspecting there was some task schedulled to run at the startup but Shutdow stopped the task before it finished all the work.
Is there a way to rebuild the GPT table according to the partition contents?
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