/usr/bin/mkfs.ext2: invalid option -- '-'
Usage: mkfs.ext2 [-c|-l filename] [-b block-size] [-C cluster-size]
	[-i bytes-per-inode] [-I inode-size] [-J journal-options]
	[-G flex-group-size] [-N number-of-inodes] [-d root-directory|tarball]
	[-m reserved-blocks-percentage] [-o creator-os]
	[-g blocks-per-group] [-L volume-label] [-M last-mounted-directory]
	[-O feature[,...]] [-E extended-option[,...]] [-t fs-type]
	[-T usage-type ] [-U UUID] [-e errors_behavior][-z undo_file]
	[-jnqvDFSV] device [blocks-count]