如何获得磁盘的标识？

Question

I want to identify disk in c++ in my windows application. For example: I have a disk on E:\\ Then I changed the disk, and replace it with another one. the name is still E:\\ How can I know the disk is changed, it is not the original one?

If I have no administrator priority in win7, Can I still use some method to identy different disks?

Many thanks!

Answer 1

Probably the relevant methods are:

GetLogicalDrives()

BOOL WINAPI GetVolumeInformation( __in_opt LPCTSTR lpRootPathName, __out LPTSTR lpVolumeNameBuffer, __in DWORD nVolumeNameSize, __out_opt LPDWORD lpVolumeSerialNumber, __out_opt LPDWORD lpMaximumComponentLength, __out_opt LPDWORD lpFileSystemFlags, __out LPTSTR lpFileSystemNameBuffer, __in DWORD nFileSystemNameSize )

GetDriveType(string vol)

GetVolumeInformation will give you the serial number. If this isn't enough you will probably have to resort to WMI_PhysicalMedia . I believe all of this should work without Administrator privileges.

A page listing a bunch of relevant functions is here: http://msdn.microsoft.com/en-us/library/aa365730(v=VS.85).aspx