Hi, I have a simple project of data logging and retrieving. All I want to do is to use a PIC (it's not OT?) to read from/write to a large hard drive (> 530MB) and read from ATAPI CD ROM drive. While I think I sort of understand how to do this with less than 530 MB, I can't find much information on it above that. If anyone has any pointers to where I can find more information to do this "hobby" project, I would appreciate it very much. I prefer PIC ASM based info, but I can (barely) read other ASM. Thanks. PS: I tried apple cyber (from MP3 question) from posts before, but it doesn't have info on ATAPI/IDE yet.