TN.102.HFS Elucidations - This technical note will describe a few problems that can occur while using HFS. It will also describe ways to avoid these problems. This technical note will discuss the following problems. 1) It is very important to be careful about how files are opened and closed. There must be no more than one close for every open. 2) Don’t use Driver names, like .Bout, .Print or .Sony, in place of file names or the file system will become confused. 3) Be aware of the ioFlVersNum byte in all file calls. A number of pieces of the Macintosh system do not use, and may in fact ignore, files created with non-zero ioFlVersNums.
