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   public int initFS (DiskScheduler dsched)    {        byte[] superblock = dsched.readBlock (0);        //String fs_magic = BM.tohexbuf ((byte)4,2,4);        int fs_maversion = BM.read_uint16 (superblock,4);        int fs_miversion = BM.read_uint16 (superblock,6);        long fs_superBlockAge = BM.read_uint32 (superblock,8);        long fs_totalBlocks = BM.read_uint32 (superblock,12);        long fs_totalBitmap = BM.read_uint32 (superblock,16);        //int fs_iNodeTablesAt = BM.read_uint32 (superblock,15);        long fs_totalINodes = BM.read_uint32 (superblock,28);        long fs_usedINodes = BM.read_uint32 (superblock,32);        long fs_freeINodes = fs_totalINodes - fs_usedINodes;        long fs_rootINode = BM.read_uint32 (superblock,36);                //System.out.print("File-system magic :   "+ fs_magic);        System.out.print("File-sytem version:   "+ fs_maversion + "." + fs_miversion);        System.out.print("Superblock age    :   "+ fs_superBlockAge);        System.out.print("Total blocks      :   "+ fs_totalBlocks);        System.out.print("Block bitmap at   :   "+ fs_totalBitmap);        //System.out.print("Inode tables at   :   "+);        System.out.print("Total indoes      :   "+ fs_totalINodes);        System.out.print("Used inodes       :   "+ fs_usedINodes);        System.out.print("Free inodes       :   "+ fs_freeINodes);        System.out.print("Root inode        :   "+ fs_rootINode);        return -1;    }