- Fixed wait_for_partitions to check both EFI (p1) and root (p2) partitions
- Fixed GRUB configuration to use actual root filesystem UUID instead of placeholder
- Fixed GRUB partition reference from (hd0,gpt1) to (hd0,gpt2) for root partition
- Fixed GRUB EFI binary path to use correct monolithic grubx64.efi
- Successfully copying rootfs files (278MB images with full filesystem)
- GRUB EFI binary properly installed to EFI partition
Still debugging actual Linux boot - system shows SeaBIOS and 'Booting from Hard Disk' but doesn't boot into kernel
