Dear Bhaute ji,

Thank you for your valuable suggestion.

I liked your idea but before doing anything I want to make sure that it won't damage my application what I have in that external hard drive(120 GB, not a flash drive.). I do not have two systems but one system with two OS ; one XP home for general and another MS Windows Server2003 for Software applications. Since I have large amount of data and application in that hard drive (about 40 GB) and it is hard to install again since I don't hav CD for that application, I want to be sure your suggestion will work or atleast it will not delete my contents in that hard drive or my system itself. That is my problem or dilemma you can say.

And on the technical side when I went to disk management : When I right clicked on second volume (name is empty) there is not "Assign Drive Letter" which you have mentioned. Instead there is an option "Change drive letter and paths". Should I work on this option and give them name what I require. My drive's name when I insert that external hard drive in XP home is like this (Except my XP home(C:drive) and MS window Server 2003(D:drive)) :

...................(I:)   local disk     83.0 GB(Total Size)     58.0 GB(Free)

Mobile Data(J:) local  disk     28.7 GB(Total Size)     14.7 GB(Free).

I am sorry that I described this long but you can understand my problem... Hoping for more suggestions.

And Dear Alu jasto ji  I really appreciate your suggestion as well.