I hacked Lotus 1-2-3 release 1a to remove the necessity of inserting the distribution floppy to start the program after installing it on a hard drive. The flopp

I hacked Lotus 1-2-3 release 1a to remove the necessity of inserting the distribution floppy to start the program after installing it on a hard drive. The floppy had an "extra" dummy sector, and the hack involved NOP-ing out two instructions. I had to disassemble the released code to find it, which took a while. The hack only took seconds once I knew what was going on. I posted the hack on the old Compuserve BBS and it had over a million downloads the last I looked.