If you are on Linux you can do it with DD utility. There is a version of DD for Microsoft Windows as well. General DD usage If you wish to make a zero filled virtual disk image the size of a 720K floppy you can use dd like this: dd if=/dev/zero of=disk.img bs=1024 count=720 This … Read more
Casts of the type _ as f-ptr are not allowed (see the Rustonomicon chapter on casts). So, as far as I can tell, the only way to cast to function pointer types is to use the all mighty weapon mem::transmute(). But before we can use transmute(), we have to bring our input into the right … Read more
You have a number of issues with your code. The main ones are discussed individually below. The HLT instruction will halt the current CPU waiting for the next interrupt. You do have interrupts enabled by this point. After the first interrupt (keystroke) the code after HLT will be executed. It will start executing whatever random … Read more
There are a lot of links after this brief overview of what is involved in writing an OS for the X86 platform. The link that appears to be most promising (www.nondot.org/sabre/os/articles) is no longer available, so you’ll need to poke through the Archive.org version to read it. At the end of the day the bootloader … Read more
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