after booting to the usb, I get a blank screen with a repeating while line pulsating.

I have follow the following next tutorial:

http://www.backtrack-linux.org/wiki/...Persistent_USB


using the following Equipment and software

Windows 7 x 64

Vmware 9 running

BT5R3 KDE 32



Code:
dmesg | egrep hd.\|sd.

fdisk /dev/sdb

Command (m for help): d
Partition number (1-4): 1

Command (m for help): n
Command action
e   extended
p   primary partition (1-4)
p
Partition number (1-4): 1
First cylinder (1-522, default 1): 
Using default value 1
Last cylinder, +cylinders or +size{K,M,G} (1-522, default 522): +3500M



Command action
e   extended
p   primary partition (1-4)
p
Partition number (1-4): 2
First cylinder (193-522, default 193): 
Using default value 193
Last cylinder, +cylinders or +size{K,M,G} (193-522, default 522): 
Using default value 522

Command (m for help): t
Partition number (1-4): 1
Hex code (type L to list codes): b
Changed system type of partition 1 to b (W95 FAT32)


Command (m for help): t 
Partition number (1-4): 2
Hex code (type L to list codes): 83


Command (m for help): a
Partition number (1-4): 1

Command (m for help): w


mkfs.vfat -F 32 -n BT5 /dev/sdb1
mkfs.ext3 -b 4096 -L casper-rw /dev/sdb2



mkdir /mnt/sdb1
mount /dev/sdb1 /mnt/sdb1


cd /mnt/sdb1
rsync -r /cdrom/* .


syslinux /dev/sdb1

cp -r isolinux syslinux
cp syslinux/isolinux.cfg syslinux/syslinux.cfg
cp syslinux/isolinux.bin syslinux/syslinux.bin


nano syslinux/syslinux.cfg
and i modify the last screen so it look like this
Code:
default vesamenu.c32
prompt 0
timeout 300

menu title BackTrack Live CD
menu background splash.png
menu color title 1;37;44 #c0ffffff #00000000 std

label DEFAULT
  menu label BackTrack Persistent Text - Persistent Text Mode Boot
  kernel /casper/vmlinuz
  append  file=/cdrom/preseed/custom.seed boot=casper persistent initrd=/casper/initrd.gz text splash vga=791--

label text
  menu label BackTrack Text - Boot Text Mode
  kernel /casper/vmlinuz
  append  file=/cdrom/preseed/custom.seed boot=casper initrd=/casper/initrd.gz text splash vga=791--

label STEALTH
  menu label BackTrack Stealth - No Networking enabled
  kernel /casper/vmlinuz
  append  file=/cdrom/preseed/custom.seed boot=casper initrd=/casper/initrds.gz text splash staticip vga=791--

label FORENSICS
  menu label BackTrack Forensics - No Drive or Swap Mount
  kernel /casper/vmlinuz
  append  file=/cdrom/preseed/custom.seed boot=casper initrd=/casper/initrdf.gz text splash vga=791--

label NODRM
  menu label BackTrack noDRM - No DRM Drivers
  kernel /casper/vmlinuz
  append  file=/cdrom/preseed/custom.seed boot=casper initrd=/casper/initrd.gz text splash nomodeset vga=791--

label debug
  menu label BackTrack Debug - Safe Mode
  kernel /casper/vmlinuz
  append  file=/cdrom/preseed/custom.seed boot=casper initrd=/casper/initrd.gz text--

label memtest
  menu label BackTrack Memtest - Run memtest
  kernel /isolinux/memtest
  append -

label hd
  menu label Hard Drive Boot - boot the first hard disk
  localboot 0x80
  append -
but I was un sure to what to do next so I just closed the shell.
should I have done something, else?


thank you