dev

1.create file on floopy disk and write contents：

-> pdev=fdDevCreate(0,0,0,0)     /* A:,1.44M,whole disk,offset */

-> dosFsMkfs("/fd0"，pdev)  

-> fd=creat("/fd0/myfile",2)  or   -> fp=fopen("/fd0/myfile","w")

-> buf="what you want to write to file" 

-> write(fd,buf,strlen(buf)+1)  or -> fprintf(fp,buf)

-> close(fd)    or  -> fclose(fp)

2.open file and read contents from floopy disk:

-> readbuf=malloc(100)   

-> fd=open("/fd0/myfile",2)  or -> fp=fopen("/fd0/myfile","r")

-> read(fd,readbuf,100)   or -> fread(readbuf,1,50,fp)

-> printf readbuf   

-> close(fd)    or -> close(fp)

3.on simpc shell:

-> fp=fopen("host:d:/temp/myfile","w")

-> fprintf(fp,"kjkkhjk")

-> fclose(fp)