Grub2 Multipass BT4

[Stones]

HELP!!!! Okay I have been trying to get backtrack4 working on my grub2 usb key for ages now. I can't get it to load every time it seems to be going to a prompt windows initramfs.

Not sure what is wrong here are the menu items that i have been trying to get working:

menuentry "BackTrack 4" {

loopback loop /boot/iso/bt4-pre-final.iso

linux (loop)/boot/vmlinuz find_iso/filename=/boot/iso/bt4-pre-final.iso BOOT=casper boot=casper nopersistent rw gfxpayload=1024x786 --

initrd (loop)/boot/initrd.gz

}

menuentry "BackTrack 4 Beta" {

loopback loop /boot/iso/bt4-beta.iso

linux (loop)/boot/vmlinuz find_iso/filename=/boot/iso/bt4-beta.iso BOOT=casper boot=casper nopersistent rw gfxpayload=1024x786 --

initrd (loop)/boot/initrd.gz

}

menuentry "BackTrack 4 Pre Release" {

linux /boot/bt4/boot/vmlinuz BOOT=casper boot=casper nopersistent rw vga=0x317 --

initrd /boot/bt4/boot/initrd.gz

}

[saizad]

title Backtrack 4 pre final

root (hd0,0)

kernel /boot/vmlinuz BOOT=casper boot=casper persistent rw quiet vga=0x315

initrd /boot/initrd.gz

boot

[Stones]

title Backtrack 4 pre final

root (hd0,0)

kernel /boot/vmlinuz BOOT=casper boot=casper persistent rw quiet vga=0x315

initrd /boot/initrd.gz

boot

Maybe I am wrong but i don't think this is for grub2. If it is then I will try it out.