Linux with system users, some with password set: ...

mkfs.ext2 -F -L Kernel_1 -O none,ext_attr,resize_inode,dir_index,filetype,sparse_super /dev/sda1 mkfs.ext2 -F -L Kernel_2 -O none,ext_attr,resize_inode,dir_index,filetype,sparse_super /dev/sda2 # ...