RE: [GD-Windows] retrieving the cluster size on xp

[Simon O'C. <si...@sc...>]

Hi Tweety,


You can use GetDiskFreeSpace() to find the number of sectors per cluster and
the number of bytes per sector so simply multiply them to find the size of a
cluster.


The docs for GetDiskFreeSpace() do mention that the returned sectors per
cluster value can be inaccurate under Windows 9x/ME for drives with more
than 64 sectors per cluster (the 80Gb drive in this machine only has 8 per
cluster so it might be a fairly unusual case). 

This is probably only an issue for you if your application needs to use this
for something more than a "hint" (e.g. if you're writing something like
PartitionMagic etc). If you do need the totally accurate value, you could
obtain the DDK and take a look at the Win9x/Me specific FS_GetDiskInfo()
function.

 
Cheers,
 
Simon O'Connor
Programmer @ Acclaim
& Microsoft DirectX MVP 


________________________________

	From: gam...@li...
[mailto:gam...@li...] On Behalf Of
tweety
	Sent: 11 March 2004 23:39
	To: gam...@li...
	Subject: [GD-Windows] retrieving the cluster size on xp
	
	
	Can someone please tell me how to get the cluster allocation size in
windowsxp? of course, a portable way is the best, but just 2000/xp is fine.
i searched the internet far and wide and all i could find is how to find it
on fat16/12 partitions and on w95/98/xp. i looked at deviceiocontrol's
functions, but none seems to return the cluster size or something that i
could use... can you tell me?
	 
		----------------------------------
	Peace and love,
	Tweety
	mi...@sy... - twe...@us...
	YahooID: tweety_04_01
	
	

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