Adventure Journey on ES / RTOS

I follow the youtube provided by Gem5 to get the inspiration. (http://gem5.org/Running_gem5#Full_System_.28FS.29_Mode) I download the file here: http://www.gem5.org/dist/current/arm/ with http://www.gem5.org/dist/current/arm/aarch-system-20170616.tar.xz Then Set up M5_PATH as the place I extract the files: "/home/khchen/full_system_images/" If the setting is correct, assigning the disk-image will finish the rest of setting for dtb and kernel specifications. So far I can only use this img (aarch32-ubuntu-natty-headless.img) as my disk-image to run up to the login interface of the ubuntu: build/ARM/gem5.opt configs/example/fs.py --disk-image=/home/khchen/full_system_images/disks/aarch32-ubuntu-natty-headless.img With the other imgs, for example like "aarch64-ubuntu-trusty-headless.img", I think the kernel and the dtb should be given manually, because it will automatically load something with aarch32 prefix which doesn't make sense: info: kernel ...