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  • The Recovery partition is in the right place [test it, Cmd/R at the chimes]… it's the Apple_KernelCoreDump that's the weird bit. that's a developer crash-dump storage space, not expected on a regular consumer OS. The list tells me your USB is not recognised at all. See if it mounts if you boot through to the regular macOS. If it does, check what format it is. [The failure of either shift or opt to call pre-boot options is worrying though.]
    – Tetsujin
    Commented Oct 16, 2023 at 17:49
  • I've tried the recovery partion key combo before posting this: cmd + r will simply do nothing (holding, tapping... ), it simply goes in normal login page. I was reading on link below and it says that if that happens, something is wrong with my recovery partition... it also says that it should be in /dev/disk0 macworld.com/article/672001/…
    – Francisco Cortes
    Commented Oct 16, 2023 at 23:43
  • Recovery is on disk0, but it doesn't show to diskutil; only the 'wrapper' APFS partition can be seen. You can see it correctly in the synthesized disk, inside the APFS partition. Try the last remaining boot tests, Cmd/S, Cmd/T, Cmd/D & see if any of them do anything at all. It feels like your keyboard is just not communicating with the Mac before boot is underway - I presume it's working fine after that. Maybe try an external wired keyboard… just in case.
    – Tetsujin
    Commented Oct 17, 2023 at 17:12