set default="0" set timeout="0" menuentry "Buildroot" { # Grub2 supports ext4, load the kernel from the Linux rootfs partition # Set root tells grub to search the 2nd partition for the bzImage set root=(hd0,msdos2) # Set Linux to boot from the 2nd partition, SD/MMC support is baked into the kernel linux /boot/bzImage root=/dev/mmcblk0p2 rootwait console=ttyS1,115200n8 earlycon=uart8250,mmio32,0x9000b000,115200n8 reboot=efi,warm apic=debug rw }