Don't use EZBios
Posted on September 9th, 1997 by shacker
If you have a motherboard running an older BIOS and a Western Digital hard drive, you probably have the WD EZBios utility running to enable use of large hard drives. The presence of EZBios will make it impossible to boot BeOS.
The solution is to upgrade your motherboard BIOS and disable EZBios, since you won’t need it anymore.
See also: Make sure drives are seen by BIOS