The tests that I have performed -

# Critical Problems

During the tests preformed, two critical problems have been found: 
1. Power - My "Powered by Sun Notebook"'s USB ports doesn't provide enough 
power to E220. Need to use the two ports USB cable that comes with E220.

2. Time - The timing of connecting E220 to the computer is also very important. 
Because the system sometime recognized E220 as a storage, not a device. Need to 
use the two ports USB cable that comes with E220 to help.

# Connecting Device

This is the most important part, the primary goal is to have OpenSoalris use 
the correct device file via proper procedure performed - 

1. Initial Power-on
At the initial power-on, after turned on the power switch, don't boot 
OpenSolaris right away. Wait at the GRUB menu for at lease 15 seconds, let E220 
has enough time to complete its boot procedure. The reason that I found this is 
becuase most of the time even with -rv boot parameter specified, the system 
still recognized E220 as a storage. After many tests, have found this 
phenomenon has nothing to do with settings (i.e. parameters in 
/etc/path_to_inst, /etc/path_to_inst.old, /etc/system). So tests have been 
performed to see if it realted to time. The result is if OpenSolaris boot is 
delayed, event without -rv boot paramenter, the system can recognized E220 as a 
device. 

2. Plug and Play
      With the above experience and further experiments, have found - after 
OpenSolaris booted, at the first time attached the device, it will be 
recognized as a storage. At the second time attached the device, it will be 
recognized as a device. So the trick is using the two ports USB cable and 
connecting both USB connectors to the system. Then unplug the primary connector 
without unplugging the auxiliary connector that provides power. Connect the 
primary connector back. At the moment, the system will detect E220 correctly 
and use the correct device file. 

The detail settings that I have -
http://blog.xuite.net/evereasy/solarpower/27645846
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