

Thank you. That’s interesting and actually supports the assertion that some executables are still built in 32bit, this reaper thing in particular.
It also lead me to a requirements list explicitly containing the following:
Architectures:
- x86_64 systems must support multilib and have both 32-bit (x86, i386, lib32) and 64-bit (x86_64, amd64) versions of required libraries and graphics drivers installed
- 64-bit-only x86_64 systems are not supported
- 32-bit-only x86 systems are not supported
It’s here: https://github.com/ValveSoftware/steam-for-linux/blob/master/README.beta.md
Found via this comment from what seems like a valve employee: https://github.com/ValveSoftware/steam-for-linux/issues/13015#issuecomment-6204720307




Technically I think it is just chainloading the Windows Boot Manager
bootmgfw.efiwhich then loadswinload.efiwhich boots Windows.