Drive Sizes

[George Bleck]

Anyone have experience in attaining the drive sizes (not the partition sizes!) via api calls?

I beleive I can use the OCTL_DISK_GET_DRIVE_GEOMETRY in WinNT, but in Win 9x I'm stumped.

[Eric Pearson]

Check out the GetDiskFreeSpace API. In addition to free space, it gives you the numbers you need to calculate the disk size. Total clusters, sectors per cluster, and bytes per sector.

-- Eric

------------------
Perfect Sync: Perfect Sync Development Tools
Email: mailto:[email protected][email protected]</A>

[Dave Navarro]

If you create two partitions on your hard drive, GetDiskFreeSpace() will return the size of each partition, not the physical drive size.

The only way to do it is through DeviceIoControl and VWIN32_DIOC_DOS_DRIVEINFO. I don't have a specific example, but that should get you started.

--Dave

------------------
PowerBASIC Support
mailto:[email protected][email protected]</A>

[Scott Turchin]

For what's it's worth, and I know it's not the same topic, but can the same information here be used for what you are looking for??? (GetVolumeInformation)

Function DriveSerialNumber(Drive As String)Export As String
Local HWord As Word
Local LWord As Word
Local Volname As Asciiz * 16
Local VolBuffer As Asciiz * 255
Local lpVolumeSerialNumber As Long
Local lpMaximumComponentLength As Long
Local lpFileSystemFlags As Long
Local FileSysBuffer As Asciiz * 255

If GetVolumeInformation (ByCopy Drive, VolBuffer, SizeOf(VolBuffer), lpVolumeSerialNumber , lpMaximumComponentLength, _
lpFileSystemFlags , FilesysBuffer, SizeOf(FilesysBuffer)) <> 0 Then
    HWord = HiWrd(lpVolumeSerialNumber)
    LWord = LoWrd(lpVolumeSerialNumber)
    Function = Right$("0000000"+Hex$(HWord), 4) + "-" + Right$("0000000"+Hex$(LWord), 4)
Else
    Function = "Cannot Read Drive.."
End If

End Function

------------------
Scott
mailto:[email protected][email protected]</A>