用T-SQL创建数据库总是出现：尝试打开或创建物理文件create file 遇到系统错误。试遍了网上的方法，D盘有操作权限，但是就是不行。麻烦大家帮我看看，球球了。代码如下
create DATABASE student ON PRIMARY
(
Name = student_data,
FILENAME ='D:\zhaoyingchao\data\student.mdf',
SIZE = 10MB,
MAXSIZE = UNLIMITED ,
FILEGROWTH =1
)

LOG ON (
NAME = student_Log,
FILENAME='D:\zhaoyingchao\data\student.ldf',
SIZE = 3MB,
MAXSIZE = UNLIMITED,
FILEGROWTH = 10%
)