here is a simple method to hide ur disk
drive >>open control panel
>>go to administrative tools
>>click computer managment
>>now a window will appear
>>click disk managment on the left column
now u will see al disk drives
>.suppose u have to hide local disk E
>>right click on local disk E and choose
"change drive letter and paths" now a small
window will appear showing ur letter"E"
click remove and then ok.....
open my computer u will not see local disk E
to bring back repeat the abv steps but
when u open disk managment the drive
that is hidden will b without any letter
>>right click on it and
>>choose "change drive letter and paths"
>>press add and than ok