.\"$NetBSD: prep,v 1.2 2009/04/25 21:21:48 snj Exp $ . .Pp It is strongly recommended that as part of the installation procedure, you upgrade your system's BIOS to the latest version available from your system vendor. Later BIOSes often contain workarounds for CPU and chipset bugs, workarounds that cannot be provided by the operating system. .Pp In the past, bugs fixed this way have been known to cause unpredictable behaviour and frequent system crashes with .Nx and other .Ul operating systems on x86 hardware.