
Originally Posted by
nucklearknight
Ok so I don't want to boot from a USB drive. I can do that. I want to have a small partition of my hard drive that I can boot backtrack 3 from as if it were a USB drive. I don't want it to save changes. This is because I want to be able to boot into it whenever I want and not have to worry about carrying around a flash drive or having it jut out the side.
That is what we have been trying to explain to you. The test VM I created was partitioned as follows using the Ubuntu LiveCD.
Code:
P1 - 5GB NTFS
P2 - 5GB ext3
P3 - 10GB NTFS
I installed Windows XP into P1 first. I then booted up the ubuntu LiveCD again, installed grub to the MBR and created a minimal menu.lst containing the following:-
Code:
default 0
timeout 30
title Windows XP (SP3)
root (hd0,0)
savedefault
makeactive
chainloader +1
I tested this to ensure that the VM booted properly, then rebooted from the Ubuntu LiveCD and copied the contents to P2. I then added the following to menu.lst:-
Code:
title Ubuntu 8.04 Livesys
root (hd0,1)
kernel /casper/vmlinuz boot=casper file=/dev/sda2/preseed/ubuntu.seed
initrd /casper/initrd.gz
I then booted into this 'Live System' and mounted the BT3 usb image. I use Daemon Tools to provide virtual drives which I assign to the VM when I create it. Drive V: as it happens 
I copied the contents of the BT3 directory to P2 and added the following to menu.lst:-
Code:
title BT3 Graphics mode (KDE)
root (hd0,1)
kernel /boot/vmlinuz root=/dev/hda2 ro autoexec=xconf;kdm
And that's it. A triple-boot VM with Windows XP, Ubuntu and BT3. The latter both being 'Live Systems'.
The boot stanzas were adapted from the isolinux versions. The actual code shown above may contain minor errors as it was recreated from my notes and not taken from the VM which no longer exists. I deleted it after I'd learned what I set to.
Quite frankly, if you really are having such difficulty adapting the guides on here then perhaps this is something you should not be doing right now. You could easily render your system unbootable or even lose the entire contents of your HDU.
UPDATE:
I've just received the following PM from a new member who has done EXACTLY what I was trying to warn the OP about 

Originally Posted by
ironvidra
Hi, -honeywar
I was trying to install BT3 on usb with changes, but when I was doing "fdisk /dev/sda" I did it on my hdd computer not on the usb and now when I try tu run on my computer says "no operative sistem". I deleted my Windows Vista!
Now I try to install the windows but says "the disk is not connected".
Do you have any idia what can I do!?
Thanx!