I have a question about running the successfully assembled code in the first lesson of the online Cambridge University assembler course for the Raspberry Pi. I'm confused as to how to follow the instructions in the following paragraph:
"To install your operating system, first of all get a Raspberry PI SD card which has an operating system installed already. If you browse the files in the SD card, you should see one called kernel.img. Rename this file to something else, such as kernel_linux.img. Then, copy the file kernel.img that make generated onto the SD Card. You've just replaced the existing operating system with your own. To switch back, simply delete your kernel.img file, and rename the other one back to kernel.img. I find it is always helpful to keep a backup of you original Raspberry Pi operating system, in case you need it again."
The formatted card can't be ready by my windows PC and presumably I can't edit the card actually being used by the Pi? Or can I? Is the SD card just used to booth and thereafter I can replace the kernel.img file, provided I have another card to boot with later?
Thanks in advance for any replies. Its been a long, long time since I did anything like this!