The BIOS does not recognize a boot USB stick created by Fedora Media Writer or otherwise, like Linux dd or GNOM Disks.
However, it is possible to load Fedora ISO image with Ventoy-1.1.05 and perform installation. But after that BIOS does not see installed OS.
Anaconda splits HDD on its own, without additional instructions.
Please report as a bug How to file a bug :: Fedora Docs so that the developers are made aware of the problem.