bzero              68 fs.c                   bzero(dev, b + bi);
bzero             120 mkfs.c           bzero(&de, sizeof(de));
bzero             125 mkfs.c           bzero(&de, sizeof(de));
bzero             147 mkfs.c             bzero(&de, sizeof(de));
bzero             229 mkfs.c           bzero(&din, sizeof(din));
bzero             245 mkfs.c           bzero(buf, BSIZE);