Live USB boot problem

hi,

I'm trying to make a Live USB of BT4, but I keep running into an error I don't know how to get around.

I used Unetbootin to write the BT4-final ISO image to a 8GB thumbstick, It seems to complete fine.

However, when I try to boot from the USB drive it comes up with the following:

SYSLINUX 3.72 2008-09-25 EBIOS COPYRIGHT (C) 1994-2008 H. PETER ANVIN
Could not find kernel image : Linux
boot : _

I tried typing "startx" or running other files from this prompt but I get the same response each time although "linux" is exchanged with whatever I type at the prompt.

I tried downloading the BT4 ISO again, and made several attempts to make a new thumb all without prevail.

I don't suppose I'm doing something wrong but can't find any clues as to what I'm missing here, hopefully someone can send me in the right direction?

thanks.

Did you check the md5sum?
Also hardware specs will help us to help you.

Hi Amael,

thanks for the reply.

yeah MD5 is verified.

trying to run on a laptop:
AMILO Pa 1510
AMD Turion 64x2 TL-50 1,6GHz
1,5 GB RAM
ATI Radeon Xpress 1100


nothing too exotic I presume...


I read that this error might have something to do with the syslinux.cfg file, all paths seem to be correct tho.

here is the print of the thumbstick I've made as well:

H:\>dir /p
Volume in drive H has no label.
Volume Serial Number is EC0F-88A2

Directory of H:\

14-12-2009 00:41 4.690.640 ubnkern
01-01-2010 00:15 8.555.925 ubninit
29-01-2010 19:20 <DIR> boot
29-01-2010 19:20 <DIR> casper
29-01-2010 19:20 25 ubnpathl.txt
10-01-2010 18:48 782 md5sum.txt
29-01-2010 19:24 292 ubnfilel.txt
30-01-2010 12:54 1.633 syslinux.cfg
29-01-2010 19:24 145.680 vesamenu.c32
10-01-2010 18:48 2.048 boot.catalog
8 File(s) 13.397.025 bytes
2 Dir(s) 6.417.813.504 bytes free

H:\>


hope you can help me out

I was also wondering if the syslinux.cfg file is what it's supposed to be, do you know what it should state?

this is it now:

default vesamenu.c32
prompt 0
menu title UNetbootin
timeout 100

label unetbootindefault
menu label Default
kernel /ubnkern
append initrd=/ubninit BOOT=casper boot=casper nopersistent rw quiet vga=0x317

label ubnentry0
menu label Start BackTrack FrameBuffer (1024x768)
kernel /boot/vmlinuz
append initrd=/boot/initrd.gz BOOT=casper boot=casper nopersistent rw quiet vga=0x317

label ubnentry1
menu label Start BackTrack FrameBuffer (800x600)
kernel /boot/vmlinuz
append initrd=/boot/initrd800.gz BOOT=casper boot=casper nopersistent rw quiet vga=0x314

label ubnentry2
menu label Start BackTrack Forensics (no swap)
kernel /boot/vmlinuz
append initrd=/boot/initrdfr.gz BOOT=casper boot=casper nopersistent rw vga=0x317

label ubnentry3
menu label Start BackTrack in Safe Graphical Mode
kernel /boot/vmlinuz
append initrd=/boot/initrd.gz BOOT=casper boot=casper xforcevesa rw quiet

label ubnentry4
menu label Start Persistent Live CD
kernel /boot/vmlinuz
append initrd=/boot/initrd.gz BOOT=casper boot=casper persistent rw quiet

label ubnentry5
menu label Start BackTrack in Text Mode
kernel /boot/vmlinuz
append initrd=/boot/initrd.gz BOOT=casper boot=casper nopersistent textonly rw quiet

label ubnentry6
menu label Start BackTrack Graphical Mode from RAM
kernel /boot/vmlinuz
append initrd=/boot/initrd.gz BOOT=casper boot=casper toram nopersistent rw quiet

label ubnentry7
menu label Memory Test
kernel /ubnkern
append initrd=/ubninit

label ubnentry8
menu label Boot the First Hard Disk
kernel /ubnkern
append initrd=/ubninit

Try this video link. Follow the example exactly and it will work. You will have to boot to Live CD but it will work as a persistent Boot due to the changes made in the video. Good luck.

Video

when using unetbootin did you set the drop down menu to bt3

This is how l did it on my 8gb usb drive: [l did it all on Ubuntu Super OS]

1/ Put usb in drive [download the BT4-FINAL-ISO FIRST OF COURSE]

2/ Open Terminal window and enter:
mkfs.vfat /dev/sdb1 [or whatever your usb is - mine is sdb1]

3/ Next Enter:
mkfs.ext3 -b 4096 -L casper-rw /dev/sdb2

After it completes:
4/ Then you just use Unetbootin with the BT4-FINAL-ISO

5/ Open the menu.lst in boot/grub:

cd /mnt/sda1/boot/grub

vi menu.lst

Change default at top to 4 instead of 0
And the kernel line below should be changed to vga=0x317
Save and reboot.
it should start from the persistent live-cd or you can go to that line yourself.
Good Luck.

i face the same problem.
the final bt4 md5 is right
but boot error.
my comp is lenovo r61i
any one can help please

regard