Technical assistance sorted out a problem with regards my memory card and now my iMac won't see my external hard drive which is plugged in to the usb socket at the back of my iMac. Tech assistance is saying this is mac problem and can't/won't help. Before the issue with the memory card, the hard drive was working fine but now it's disappeared. I have tried taking the usb plug out and reconnecting the external HD but nothing. I am not proficient at all with the mac but reasonably good with windows........ can anyone help me get the iMac to ''see'' my external hd again (in laymans parlance!)
Many thanks
Many thanks