Hello I have a USB flashdisc which is my drive J: I just tried to copy to an external drive, since I want to reformat J: Now; before copying, I got the following information when I chose "Properties" on J: Used Space: 656 572 416 byte Free Space: 366 952 448 byte Capacity: 1 023 524 864 byte The copy procedure went ok. No errors. When I choose "Properties" on the J: folder on the external drive after copying, I get the following numbers: NB! Please note: I do not know how to translate the text accurately, but the number given to me are: 567 592 343 bytes 585 469 925 bytes 7856 files, 359 folders Why such a large difference in bytes from source to destination? Have files been lost?