wrote a basic bootloader

scripts/create_disk.sh

@@ -0,0 +1,63 @@
+#!/bin/bash
+
+set -e
+
+# Size in MB
+DISK_SIZE=64
+ESP_SIZE=100  # Size of EFI System Partition in sectors (100 sectors = ~50KB, enough for our bootloader)
+
+# Create build directory if it doesn't exist
+mkdir -p build/bios
+
+# Build stage 1/2 bootloader
+./scripts/build_stage1.sh
+./scripts/build_stage2.sh
+
+# Create an empty disk image
+dd if=/dev/zero of=disk.img bs=1M count=$DISK_SIZE
+
+# Create a partition table
+(
+echo o # Create a new empty DOS partition table
+echo n # Add a new partition (EFI System Partition)
+echo p # Primary partition
+echo 1 # Partition number 1
+echo 2048 # First sector (leaving room for bootloader)
+echo +${ESP_SIZE} # Size in sectors
+echo t # Change partition type
+echo ef # EFI System Partition type
+
+echo n # Add a new partition (Main partition)
+echo p # Primary partition
+echo 2 # Partition number 2
+echo # Default first sector (right after ESP)
+echo # Use rest of disk
+echo t # Change partition type
+echo 2 # Select second partition
+echo 0c # FAT32 LBA type
+echo a # Make bootable
+echo 2 # Select second partition
+echo w # Write changes
+) | fdisk disk.img > /dev/null 2>&1
+
+# Copy bootloader to disk image
+# First stage (MBR)
+dd if=build/bios/stage1.bin of=disk.img conv=notrunc bs=446 count=1
+
+# Second stage (right after MBR)
+dd if=build/bios/stage2.bin of=disk.img conv=notrunc bs=512 seek=1
+
+# Format ESP partition
+ESP_OFFSET=$((2048 * 512))  # First partition starts at sector 2048
+mformat -i disk.img@@${ESP_OFFSET} -F -h 255 -t 1 -s 63 -c 1 ::
+
+# Format main partition
+MAIN_OFFSET=$(( (2048 + ESP_SIZE) * 512 ))  # Second partition starts after ESP
+mformat -i disk.img@@${MAIN_OFFSET} -F -h 255 -t 1 -s 63 -c 1 ::
+
+# Create EFI directory structure in ESP
+mmd -i disk.img@@${ESP_OFFSET} ::/EFI
+mmd -i disk.img@@${ESP_OFFSET} ::/EFI/BOOT
+
+# When you have the UEFI bootloader ready, uncomment this:
+# mcopy -i disk.img@@${ESP_OFFSET} boot/uefi/BOOTX64.EFI ::/EFI/BOOT/