cpu I586_CPU
cpu I686_CPU
ident "MINI-KERNEL"
maxusers 0 #maxusers最好让系统自动分配，如果设得过大，会占用过多的内存。
options INET #InterNETworking
options FFS #Berkeley Fast Filesystem
options FFS_ROOT #FFS usable as root device [keep this!]
options MFS #Memory Filesystem
options MD_ROOT #MD is a potential root device
options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!]
options NO_SWAPPING #Disable swap
device isa
device pci
# Floppy drives
device fdc0 at isa? port IO_FD1 irq 6 drq 2
device fd0 at fdc0 drive 0
# atkbdc0 controls both the keyboard and the PS/2 mouse
device atkbdc0 at isa? port IO_KBD
device atkbd0 at atkbdc? irq 1 flags 0x1
device vga0 at isa?
# syscons is the default console driver, resembling an SCO console
device sc0 at isa? flags 0x100
# Floating point support - do not disable.
device npx0 at nexus? port IO_NPX irq 13
# PCI Ethernet NICs that use the common MII bus controller code.
# NOTE: Be sure to keep the 'device miibus' line in order to use these NICs!
device miibus # MII bus support
device fxp # Intel EtherExpress PRO/100B (82557, 82558)
device rl # RealTek 8129/8139
device xl # 3Com 3c90x
device lnc0 at isa? port 0x280 irq 10 drq 0 # VMware Nic
# Pseudo devices - the number indicates how many units to allocate.
pseudo-device loop # Network loopback
pseudo-device ether # Ethernet support
pseudo-device md # Memory "disks"
上面的内核基本上是一个系统要运行的最小配制了，当然如果你的机器不同具体也不同，大家按自己的情况来定，我的机器配制是：
CPU: Pentium III 733Mhz
MotherBoard: Via 693A Chipset
NIC: Realtek 8139c
当配制好之后就是编译内核了，建议大家使用config的方式来编译，注意，最后不要使用make install，否则你原来的内核会被替换。
bsd# cd /sys/i386/conf
bsd# config MINI
bsd# cd ../../compile/MINI
bsd# make depend && make kernel
编译完成后就会成生kernel这个文件，这时它的体积还是比较大，不过现在不用管它，后面将会介绍如何处理它。
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