QEMU says no multiboot header found, load kernel first. about book HOT 4 CLOSED

I checked this out locally, and i can reproduce. Something must be off. I looked at everything and it seems accurate.... I have to step out, so I can't look at this more until tonight, but I would try using diff to compare these to the files in https://github.com/intermezzOS/kernel

from book.

It looks like the issue is due to a typo in the checksum calculation here: https://github.com/Charlotteis/charlotteOS/blob/db82812d08db0027831311666f4031ecfb485ff4/multiboot_header.asm#L8

The checksum calculation uses 0xe8520d6 as the magic constant instead of 0xe85250d6. I made the exact same typo when I was going through the steps and got the same error, so I was wondering if the constant had been mistyped in the book, but I couldn't find 0xe8520d6 anyware in the code, so it looks like we just made the same typo.

from book.

🙊 my bad! Will test this is the morning, thanks so much @henrikhodne, I can't wait to keep building this.

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That worked perfectly, thank you @henrikhodne and @steveklabnik!

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