我在升级内核时出现的错误，请高手指点！

[root@chengreat linux-2.6.6]# make install
make[1]: `arch/i386/kernel/asm-offsets.s' is up to date.
CHK include/linux/compile.h
Kernel: arch/i386/boot/bzImage is ready
sh /src/linux-2.6.6/arch/i386/boot/install.sh 2.6.6 arch/i386/boot/bzImage System.map ""
/dev/mapper/control: open failed: No such file or directory
Is device-mapper driver missing from kernel?
Command failed
我按说明步骤一步一步的进行
# make bzImage
# make modules
# make modules_install
# make install
不知为什么会出现这个错误？
请高手指点

前面做了哪些步骤？
ps：2.6.x的内核编译步骤简单，
如果不是从2.4升级，
只需要：
make xconfig
make
make modules_install
make install
请参考：
http://www.linuxsir.org/bbs/showthre...hreadid=111908