Failed to load second stage of bootloader

[phodina]

The booloader fails to load the second stage when run in qemu. In func load_second_stage_from_disk in file boot.s the code jumps to label second_stage_load_failed as the carry flag has been set.

[phil-opp]

You have to compile in release mode. Not sure why yet, but I assume that it grows too big otherwise.

[phodina]

I tried the release mode as you suggested but it also failed to load second stage.

Commands:

RUST_TARGET_PATH=`pwd` xargo run --target x86_64-bootloader --release
objcopy -O binary -S target/x86_64-bootloader/release/bootloader target/bootloader.bin
qemu-system-x86_64 -hda target/bootloader.bin -d int -s

[phil-opp]

Oh, the bootloader expects that a "kernel interface block" is appended, which specifies the kernel size. See the the bootimage crate for a way to constrict a bootable disk image from the bootloader binary.

[katietheqt-old]

Also seems solved, can we close this

[phil-opp]

Agreed, but we definitely need to provide documentation for this.