Query re copying a micro disk

I have just bought a Samsung Galaxy S5 and started off with a 2GB micro SD card in it and have filled it quite a bit more than I thought I would.
So I have a 8GB one and want to transfer the 2GB to it using copy / paste - am doing this via an USB / SD adaptor and thought it would go across fairly quickly. I copied the 2GB to a desktop folder and put the 8GB card into the adaptor (using safe removal etc) and started to paste the contents of the desktop folder into the 8GB card but it has stopped after a flying strat at 53% (see pic) and it tells me more than one day?? to finish.
Does this sound about right as it doesn't to me. I am on a Toshiba L550 laptop with an Intel i5 430M 8GB RAM running 8.1 in 7 style and the USB ports are all 2.0. Should I just stick to copying one file at a time or what?? Any ides most appreciated.

John, I never trust the Time remaining: guesstimates, I've found them to be increasingly wide of the mark. I take it that the transfer is complete now? How long did it take?

Thanks and sorry for the late reply the card itself about 18 months old and I used one of those USB /SD/micro adaptors. It was showing the files as copying across and still a ridiculous time left. So I wiped the 8GB again reformatted and did the files one by one as there were not that many.

Anyhow it seems to have copied over ok except for some photos that were of nothing much only time will tell the stuff I had on that card included the security stuff and it works ok. So I am just going to let it go with the larger card and see.
But thanks again for your concern. :)