Earlier, I was Windows user. Thus, I have all my back up on the NTFS formatted hard-drive. I have two hard-drives - Western Digital - MY Passport - NTFS formatted - has a micro-usb - when I pluggin this hard-drive, I can view the contents on the finder. However, I cannot create any folders on to my hard-drive. How can I solve this- how can I have read/write support? Another question - I have another hard-drive NTFS formatted - instead of micro-usb , it has mini -usb - the one most of the camcoders had. This hard-drive is not even detected by the Mavericks. I can't see this hard-drive on the finder. What can I do here? The same hard-disk when plugged in the Microsoft works great. What shall I do to solve this issue?