i have a portable 500GB HDD plugged into my dell xps system. The system have windows 7 professional edition. the problem is that when i try to open a file(visual studio .sln file) it is saying that access is denied. I cannot copy this file to a different location(within my local HDD) it is saying that i need permission for the task to complete. I've checked and confirmed the following things 1) I've logged into an admin account before attempting these operations 2) My admin account have 'Full Control' 3) I've full control over the portable HDD 4) I changed the 'UAC' settings to 'Never notify' Please help.