cgsecurity.org

Understood, i will start ddrescue soon, meanwhile here is the smartctl report:

smartctl 7.1 2019-12-30 r5022 [x86_64-linux-5.4.0-91-generic] (local build)
Copyright (C) 2002-19, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model: TOSHIBA ...

So, the story is, a M.2 SATA SSD main windows partition got damaged after a sudden shutdown when a dell laptop experienced a hardware failure (MOSFET failed).
It seems to be a standard OEM windows install, a secondary drive (1TB HGST HDD) also experienced problems after plugging it in another ...