Hello, Hello, I'm a freshman to seabios. I'm working on developing an OS with my teammates and using seabios to boot a virtual machine(Our OS -> seabios-> grub -> guest Linux) on our OS. We have a few machines to test our OS, However, seabios can't boot guest linux on some machines while boot successfully on others. On the failure machine, I found a such error message: "Booting from Hard Disk... Error loading operating system" And I have glanced the source code of seabios and grub, but I can't find any code related to it. I found that this problem may be related to the interrupt handler in seabios. Can anyone tell me where can I find the document about the seabios interrupt call? Thank you very much. Yang Zhang