How does blacklisting modules work?

[rieje]

How does blacklisting modules work? I don't see blacklisting mentioned anywhere. For example, with Arch's mkinitcpio, there's the modconf module or the FILES array.

Actually, I was looking at dracut too to understand how to convert existing configuration and it's not clear to me how they blacklist with modprobe as well. Does booster/dracut support only blacklisting using kernel command line parameters and/or is that preferred over modprobe.d in general? AFAIK the only difference is that the former handles the case of a broken module preventing the system from booting (I think the latter cannot because it occurs at a later stage during the boot process?).