Freshman year of high school I took a class called "Business Computer Applications". It was 1983 and I was 13. We were using Apple II+ computers or their clones. I had an Apple II+ since they came out and knew lots of things by then. I "wowed" my teacher with 3 line programs and such. On our classroom floppy I had a file with a control character in it's name, it was a disk editor. Knowing the disk directory layout things (it was a linked list of blocks), I carved out a whole hidden set of directory entries. So each day of class I would load up the disk editor using the invisible control characters, patch back in my hidden blocks, play with my hidden files, then at the end of class I'd load the disk editor up again and hide my files. Teacher never saw what was really on that disk.
brokenmachine|1 year ago
Wow