硬盘上启动lfs livecd

c-aries@babyaries:~/software/lfs$ pwd
/home/c-aries/software/lfs
c-aries@babyaries:~/software/lfs$ ls
initramfs_data.cpio.gz             lfs-sources
LFS-BOOK-6.3-HTML.tar.bz2          linux
lfslivecd-x86-6.3-r2160.iso        Linuxsir手把手.tar.bz2
lfslivecd-x86-6.3-r2160-min.iso    note
lfslivecd-x86-6.3-r2160-nosrc.iso
c-aries@babyaries:~/software/lfs$ sudo gedit /boot/grub/menu.lst
c-aries@babyaries:~/software/lfs$ tail /boot/grub/menu.lst
root        (hd0,0)
kernel        /vmlinuz-2.6.18-6-686 root=/dev/sda7 ro single
initrd        /initrd.img-2.6.18-6-686

title        LFS LiveCD
root        (hd0,0)
kernel         /livecd/lfs/linux root=iso:/dev/sda5:/c-aries/software/lfs/lfslivecd-x86-6.3-r2160.iso rw
initrd         /livecd/lfs/initramfs_data.cpio.gz

### END DEBIAN AUTOMAGIC KERNELS LIST
c-aries@babyaries:~/software/lfs$

我的分区情况如下：
/dev/sda1                      /boot
/dev/sda5                      /home
/dev/sda6                      swap
/dev/sda7                      /                  Debian的根目录
/dev/sda8                      /                  用来装LFS及其它linux的实验分区