What a fucking weekend. Tried to clone an existing windows hard drive onto a new unused one with the same size. Oh the adventure that I got myself into. 😭
Old hard drive corrupted in the middle of the process (how???). Not bootable anymore (until at the very end).
Then an odyssey started to try to rescue the old data using my spare linux drive onto a USB stick. Fucking with uefi settings and apparently a boot sequence with incorrectly named drives (?).
Had to reflash a usb stick I had for linux installation to windows installation.
I had multiple drives attached to my PC and didn't want my own ones to be overridden, so I needed to detach all drives except for the target one.
The target one had already fucked up partitions from the failed cloning, so I had to research the tools to fix it manually, not knowing what I was doing.
At the end it worked out, windows installed, data copied onto the target.
The old drive was able to recover, but I didn't give a shit about it anymore.

Was a sleepless night, spent wayy too much time with this...