Don't ask how that happens, I don't know. Finally, I knew I HAD to solve the problem or end up with a badly fragmented drive which in turn could cause files to become corrupted. Problem Solved First, I wrote to a friend of mine who is a computer expert. Restart in MS-DOS Mode . And so on.
Case is unimportant.
I typed Exit to return to Windows. I'm not going to give you all the technical details, but I will try to explain as simply as possible just what happens during ordinary use of your computer. Cluster size usually varies according to the size of your hard drive partitioning. A byte is one character or one space. Let's assume your cluster size is 4,096 bytes.