Enter "jayos" and kernel parameters after boot: prompt     F2 for main screen
LOOPBACK FILESYSTEMS
---------------
uproot=         Device with /boot/root-deltas.tbz to upgrade root filesystem
rootdev=        Device with /boot/root.gz         to mount as /
usrdev=         Device with /fs/usr.fs            to mount as /usr 
optdev=         Device with /fs/opt.fs            to mount as /opt  
localdev=       Device with /fs/local.fs          to mount as /usr/local
          VIDEO
---------------
newvid          Start X11 in VGA16 mode, run graphical video configuration
framebuf        Don't probe video hardware but use framebuffer instead
qemu            Use preconfigured 1280x1024 display under QEMU
loqemu          Use preconfigured 1024x768 display under QEMU
video=imacfb:i17 or  video=imacfb:i20  or  video=imacfb:macbook
           MISC
---------------
vanilla         Boot Enterprise Linux 2.6.9 kernel
initshell       Open a shell within the initial ramdisk
shell           Open a shell within "participating" /etc/init.d scripts
alt             Load encrypted root filesystem
nofw            Prevent firewall from starting
dhcp            Start DHCP client