Hi. I have a seagate 1tb portable hd which has been working fine for six months, but has decided to now play up. I am trying to get files off it back onto my imac desktop but it either doesn't work or says it will take over a day to transfer only 10g. When i verify it in disk utility it says it's ok?? It acts the same over the other 2 macs in my house. Any help would be appreciated.