Thanks a lot totriz for the explanation, and ewavr for the binary and that program to make an SD bootable.
I'll get one of those cheap USB card reader/writers in a few days, and I'll be able to try this out.
Now what I'm wondering, is if DryOS (or a camera script) will load the binary into memory, or if it needs to keep reading from it on the card. I'm only guessing that it would be able to store 131 KB, and forget about the .bin on the card. So I had the idea to use the included 16 MB card for this, let it load, and then swap it out for my real card. The thing with the
A720 is that the memory card is under the battery door, although I don't think that would be a problem for me. I figure I would get the most use out of the features that would require it to be on AC power anyway. So I could just let it load and swap it out whenever I wanted to use the CHDK features. If this plan doesn't work, and if it does work to make my "data" card bootable to use this and still use it for capture, that would be fine. It would just be nice to keep the program and data separate 😀
