i try to install sco 5.0.5 on esx 3.5 but without any success.
with some manuals from and this forum i install 5.0.7
but i can even start installation of 5.0.5, when just start installation i get fd(44) unix bad magic number
finally I install sco 5.0.5 on esx 3.5
this was the solution
i install in with SCO 5.0.7 boot disk and SCO 5.0.5 CD