Apparantly a WD_BLACK SN770 1TB, fw 731100WD, drive is affected by this update. I can confirm that the update to 24H2 was started and that the SSD has gotten a corrupted partition table.
Diskpart shows nothing, TestDisk shows double entries and not markers and the log says check_part_gpt failed for partition. With the corresponding line No FAT, NTFS, ext2, JFS, Reiser, cramfs, or XFS marker in the console.
I am currently rebuilding the partition table from gpt backup, but I don't know if the 24H2 update has a repartitioning action in it. Also the boot partition is Bitlocker enabled.
It is a nice challenge to try and recover it fully.But, if the update hasn't been completed and the hammering continues, then I think chances are it might happen again.
My guess is that the firmware of the ssd needs to be updated first to account for the HMD bug?
Oh well...
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