WebOS: Ubuntu chroot on virtual partition

1. Install Preware 
2. Install Xecutah, Xserver and Xterm (from Preware on device)
3. Start Xecutah, then Xterm from Xecutah
4. In Xterm create image for virtual partition with command:
   
   

   dd if=/dev/zero of=/media/internal/ubuntu.img bs=1M count=2048
   
   

5. Create ext3 file system for image:
   
   

   mkfs.ext3  /media/internal/ubuntu.img

   
   
6. Make mount folder
   
   

   mount -o remount,rw /
   mkdir -p /media/ext3fs

   
   
7. Mount image
   
   

   mount /media/internal/ubuntu.img   /media/ext3fs

   
   
8. Now install Ubuntu chroot from Preware
9. Start Xecutah, then Ubuntu chroot from Xecutah

Nice tutorial how to get most of Ubuntu chroot on WebOS:

http://www.overclock.net/t/1103959/tutorial-for-overclocking-your-hp-touchpad-and-installing-linux