boot_i386.8: Mention this is legacy

Reviewed by:	imp
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D49704

(cherry picked from commit b8437cb)
(cherry picked from commit 96743bf)

Author: emaste

sbin/reboot/boot_i386.8

@@ -32,9 +32,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"     @(#)boot_i386.8	8.2 (Berkeley) 4/19/94
-.\"
-.Dd July 11, 2020
+.Dd April 7, 2025
 .Dt BOOT 8 i386
 .Os
 .Sh NAME
@@ -47,14 +45,14 @@ An automatic consistency check of the file systems will be performed,
 and unless this fails, the system will resume multi-user operations.
 .Pp
 .Sy Cold starts .
-Most i386 PCs attempt to boot first from floppy disk drive 0 (sometimes
+Legacy i386 PCs attempt to boot first from floppy disk drive 0 (sometimes
 known as drive A:) and, failing that, from hard disk drive 0 (sometimes
 known as drive C:, or as drive 0x80 to the BIOS).
 Some BIOSes allow
 you to change this default sequence, and may also include a CD-ROM
 drive as a boot device.
 .Pp
-Some newer PCs boot using UEFI firmware, not BIOS.
+Contemporary PCs boot using UEFI firmware, not BIOS.
 That process is described
 in
 .Xr uefi 8 .