usb img build

[aczarnecki at osanet.pl (Albert Czarnecki)]

albert pisze:
> Hi
>
> I try build a usb img,I run lh_config, edit config files and run lh_build
> filesystem.squashfs it's build but I don't have a img files
> when a scripts it's finished I have a error
>
> !!! The following error/warning messages can be ignored !!!
> /usr/bin/lh_losetup: 52: arith: syntax error: "CYL*512"
> P: Deconfiguring file /etc/hostname
> P: Deconfiguring file /etc/resolv.conf
> P: Deconfiguring file /etc/hosts
> P: Begin mounting /sys...
> P: Begin mounting /proc...
> P: Configuring file /etc/hosts
> P: Configuring file /etc/resolv.conf
> P: Configuring file /etc/hostname
> P: Configuring file /etc/apt/sources.list
> Get:1 http://ftp.debian.org etch Release.gpg [378B]
> Hit http://ftp.debian.org etch Release
> Get:2 http://security.debian.org etch/updates Release.gpg [189B]
> Hit http://security.debian.org etch/updates Release
> Ign http://ftp.debian.org etch/main Packages/DiffIndex
> Get:3 http://ftp.debian.org etch/main Packages [4295kB]
> Ign http://security.debian.org etch/updates/main Packages/DiffIndex
> Hit http://security.debian.org etch/updates/main Packages
> Fetched 4295kB in 16s (261kB/s)
> Reading package lists... Done
> P: Deconfiguring file /etc/hostname
> P: Deconfiguring file /etc/resolv.conf
> P: Deconfiguring file /etc/hosts
>
> img files didn't generate
>   
I still have this error and I couldn't generate .img which I use 
live-helper from svn

for a change I download file from project site 
http://live.debian.net/cdimage/release/4.0_r0-rc1/i386/usb-hdd/debian-live-40r0-rc1-i386-gnome-USB.img   

next I run dd if=name.img of=/dev/sda <--- this is a my pendrive, when I 
boot debian live from usb I see error
Could not find image kernel: /vmlinuz , ok I write vmlinuz and press 
enter system run but I have next error
VFS  cannot open root device "NULL"  Please append and correct  "root=" 
option
Kernel panic - Unable to mount root fs


Albert