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How to list physical disks?

What is the "best way" (fastest) C++ way to List physical drives installed on my computer? Is there a boost library to do that?

Answer 1

use GetLogicalDriveStrings() to retrieve all the available logical drives.

#include <windows.h>
#include <stdio.h>


DWORD mydrives = 100;// buffer length
char lpBuffer[100];// buffer for drive string storage

int main()
{
      DWORD test = GetLogicalDriveStrings( mydrives, lpBuffer);

      printf("The logical drives of this machine are:

");

      for(int i = 0; i<100; i++)    printf("%c", lpBuffer[i]);


      printf("
");
      return 0;
}

或使用<条码>

#include <windows.h>
#include <direct.h>
#include <stdio.h>
#include <tchar.h>

// initial value
TCHAR szDrive[ ] = _T(" A:");

int main()
{
  DWORD uDriveMask = GetLogicalDrives();
  printf("The bitmask of the logical drives in hex: %0X
", uDriveMask);
  printf("The bitmask of the logical drives in decimal: %d
", uDriveMask);
  if(uDriveMask == 0)
      printf("
GetLogicalDrives() failed with failure code: %d
", GetLastError());
  else
  {
      printf("
This machine has the following logical drives:
");
  while(uDriveMask)
    {// use the bitwise AND, 1–available, 0-not available
     if(uDriveMask & 1)
        printf("%s
",szDrive);
     // increment... 
     ++szDrive[1];
      // shift the bitmask binary right
      uDriveMask >>= 1;
     }
    printf("
 ");
   }
   return 0;
}

Answer 2

One possibility is to use WMI to enumerate the instances of Win32_DiskDrive.

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