Firstly, please note the problem only persist on NTSF external drive. Mac Ox Extended external drive don't have this problem. I recently update my Macbook Pro Snow Leopard (10.6.8) to Mountain Lion (10.8.4). The finder search function seem to break once I upgrade to the latest OS. Searching files from macbook itself is okay. However, any search on the NTSF external hard drive yields no result at all. Harddrive Info: NTSF drive. (I switch between window and Mac a lot) I used 'Paragon' to read/write in Snow Leopard. I have since uninstall the Paragon as Mountain Lion seem to be able to read/write NTSF drive without any 3rd party software. I have the same problem 'with' or 'without' the paragon software. I tried using Spotlight 'Privacy' to refresh the index but yield no result. Do anyone have a fix for this problem? Again, please note that the problem only occurs on NTSF external drive. I don't really want to reformat all my drive as I need them for Window. Thanks in advance.