The SA510 that went from fine to 0MB in one afternoon
An M.2 Blue SA510 in an office desktop dropped out mid-session; on restart the BIOS put its capacity at 0MB and WD's updater could not even find a drive to patch. The owner did the right thing and simply unplugged it. At the bench the controller was brought up in its service mode, the firmware hang was worked around, and a full image was taken gently before the drive was asked for anything more. All but a scattering of files came back clean, each under its own name.