Use "fdisk" to create 4 partitions.
Please use "mkfs.ext4" to format the second and the fourth partition.
$ mkfs.ext4 /dev/sdc2
$ mkfs.ext4 /dev/sdc4
dd firmware_ls1043ardb_sdboot.img to SD card.
$ dd if=firmware_ls1043ardb_sdboot.img of=/dev/sdc bs=512 seek=8
Write boot_LS_arm64_lts_5.10.tgz to the second partition of SD card.
$ mount /dev/sdc2 /mnt
$ cp boot_LS_arm64_lts_5.10.tgz /mnt
$ tar -xzvf boot_LS_arm64_lts_5.10.tgz
$ rm boot_LS_arm64_lts_5.10.tgz
$umount /mnt
Write rootfs_lsdk2108_buildroot_tiny_arm64.tgz to the fourth partition of SD card.
$ mount /dev/sdc4 /mnt
$ cp rootfs_lsdk2108_buildroot_tiny_arm64.tgz /mnt
$ tar -xzvf rootfs_lsdk2108_buildroot_tiny_arm64.tgz
$ rm rootfs_lsdk2108_buildroot_tiny_arm64.tgz
$umount /mnt
