U盘可以做LiveCD么？
主板支持U盘引导启动，Linux的LiveCD可以用U盘做介质么？
推荐回答（5个）
可以的，先下载一个u盘启动盘制作软件，我是用【电脑店U盘启动盘制作工具】，安装好后点“一键制作成u盘启动”，制作成功后把你的Linux
ISO复制到U盘ISO目录（自己新建）中，开机时用U盘启动选择运行自定义ISO就可以了
1.格式化U盘，并用grubinst安装GRUB引导代码到U盘的MBR
2.复制grldr、fonts（启动菜单不需要支持中文则不需要fonts）到U盘根目录
3.根目录中编写menu.lst，举例：
代码:
fontfile (hd0,0)/fonts
default 0
timeout 30
title Gentoo Installer
configfile (hd0,0)/boot/grub/menu.lst
title commandline
savedefault --wait=2
commandline
title reboot
savedefault --wait=2
reboot
title halt
savedefault --wait=2
halt
4.用UltraISO（甚至WinRAR）解压ISO文件中的所有内容到U盘根目录
5.已经完成！
要说明的是，上面是启动miniCD的方法，LiveCD稍微有点不同，因为miniCD光盘是用GRUB引导而LIVECD是用isolinux引导的。
相比较来说区别有两点：
1.U盘根目录中的menu.lst文件中configfile命令需修改为：
configfile (hd0,0)/isolinux/menu.lst
2.在isolinux目录下要根据isolinux.cfg文件自己编写一个menu.lst
isolinux.cfg文件：
代码:
default gentoo
timeout 150
prompt 1
display boot.msg
F1 kernels.msg
F2 F2.msg
F3 F3.msg
F4 F4.msg
F5 F5.msg
F6 F6.msg
F7 F7.msg
label gentoo
kernel gentoo append root=/dev/ram0 init=/linuxrc dokeymap looptype=squashfs loop=/image.squashfs cdroot
initrd=gentoo.igz vga=791
label gentoo-nofb
kernel gentoo append root=/dev/ram0 init=/linuxrc dokeymap looptype=squashfs loop=/image.squashfs cdroot
initrd=gentoo.igz
label memtest86
kernel memtest8
6改写成menu.lst文件：
代码:
default 1
timeout 30
title gentoo
kernel gentoo root=/dev/ram0 init=/linuxrc dokeymap looptype=squashfs loop=/image.squashfs cdroot
initrd gentoo.igz vga=791
title gentoo-nofb
kernel gentoo root=/dev/ram0 init=/linuxrc dokeymap looptype=squashfs loop=/image.squashfs cdroot
initrd gentoo.igz
title memtest86
kernel memtest86
改写过程中要注意的是：将所有的label改写成title；去掉append；修改initrd=gentoo.igz中的等号为空格；删除prompt 和display部分（我不太清楚GRUB是否支持这些命令，所以删了）
用这样的方式启动LiveCD与刻盘启动的唯一区别是刚启动的时候没有提示信息，也不能输入额外的内核参数，其实是因为我不太清楚如何用GRUB做到display，如果要加额外参数的话可以直接修改menu.lst
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