Hello, i connected my seagate external harddrive to my mac osx all was well, i then switched the harddrive of before ejecting it from the mac osx. My mac is now not recognising the seagate and giving a message do not recognise item in usb port and asks me to ignor eject or initilize all of which have no effect. I have alot of data on the hard drive and do not want to erase it. Pleeeeese help