Before the format, using fdisk must do create new partitions for ext4 and fat32
mkfs.vfat -n ks.vfat -F 32 /dev/sdh2
mkfs.vfat 3.0.1 (23 Nov 2008)
mkfs.ext4dev -L ks.ext4 -m 0 /dev/sdh1
mke2fs 1.41.3 (12-Oct-2008)
Filesystem label=ks.ext4
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
424320 inodes, 1694849 blocks
0 blocks (0.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=1736441856
52 block groups
32768 blocks per group, 32768 fragments per group
8160 inodes per group
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632
Writing inode tables: done
Creating journal (32768 blocks):
done
Writing superblocks and filesystem accounting information: done
This filesystem will be automatically checked every 29 mounts or
180 days, whichever comes first. Use tune2fs -c or -i to override.
https://ext4.wiki.kernel.org/index.php/Ext4_Howto