Dúvida para instalar o backtrack5-kde

[lucaskanon]

Não estou conseguindo instalar o Backtrack 5 KDE 64 bits pelo pendrive
eu executei o unetbootin-windows-563 e coloquei toda a image .ISO do backtrack 5 no pendrive e selecionei na BIOS para dar boot pelo pendrive...
deu certo e tudo selecionei a 2 opção do backtrack e depois digiti em:
root@root: ~# startx

abriu a tela apareceu LOADING e depois apareceu isso:

root@root: ~# startx
xauth: creating new authority file /root/ .Xauthority
xauth: creating new authority file /root/ .Xauthority

X.Org X Server 1.7.6
Release Date : 2010-03-07
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.24-28-server x86_64 Ubuntu
Current Operating System: Linux root 2.6.38 #1 SMP Thu Mar 17 22:59:29 EDT 2011 x86_64
Kernel command line: initrd=/casper/initrd.gz file=/cdrom/preseed/custom.seed boot=casper text splash vga = 791 -- BOOT_IMAGE=/casper/vmlinuz
Build Date: 08 March 2011 08:22:34 AM
xorg-server 2:1.7.6-2ubuntu7.6 (For thechnical support please see http://www.ubuntu.com/support)
Current version of pixman: 0.16.4
   before reporting problems, check http://wiki.x.org
   to make sure that you have the latest version
Markers: (--) probed, (**) from config file, (==) default setting,
   (++) from command line, (!!) notice , (II) information,
   (WW) warning, (EE) error , (NI) not implemented , (??) unknown.
(==) Log file: "/var/log/Xorg.0.log" , Time: thu Oct 13 11:50:44 2011
(==) Using config directory: "/usr/lib/X11/xorg.config.d"
The XKEYBOARD keymap compiler (xkbcomp) reports:
>Warning:    type "ONE_LEVEL" has 1 levels, but <RALT> has 2 symbols
>       Ignoring extra symbols
Errors from xkbcomp are not fatal to the X server
waiting for X server to shut down , ddxSigGiveUp: Closing log





o que eu devo fazer?