function DiskSize ( Drive : Byte ) : Int64;
Description
The DiskSize function gives the size in bytes of the given Drive.
If the drive is invalid, or no media, -1 is returned
If the drive is read-only, 0 is returned.
The Drive is designated as follows:
1 = A drive
2 = B drive
3 = C drive
...
Related commands
DiskFree Gives the number of free bytes on a specified drive
Example code : Show the size in bytes of drives B to F on your PC
var
i : Integer;
space : Int64;
begin
// Display the free space on drives B, C, D, E, F, where present
for i := 2 to 6 do
begin
space := DiskSize(i);
if space >= 0
then ShowMessage(Chr(i+64)+' Drive size = '+
FloatToStrF(space, ffNumber, 20, 0))
else ShowMessage(Chr(i+64)+' Drive not present');
end;
end;
Show full unit code
Example output is as follows:
B Drive not present
C Drive size = 11,997,143,040
D Drive size = 7,995,756,544
E Drive size = 686,587,904
F Drive size = 591,429,632