RE: retrieving the cluster size on xp

Hi Tweety,


GetDiskFreeSpace() is supported on Windows XP, Windows 2000, Windows NT,
Windows Me, Windows 98, Windows 95, and Windows Server 2003...

My comments about 9x were just addressing your preference for a portable
method.


Cheers,

Simon O'Connor
Programmer @ Acclaim
& Microsoft DirectX MVP 

> -----Original Message-----
> From: [email protected] 
> [mailto:[email protected]] On 
> Behalf Of tweety
> Sent: 13 March 2004 21:55
> To: [email protected]
> Subject: RE: [GD-Windows] retrieving the cluster size on xp
> 
> I specified in the subject that I'm interested in finding out 
> the cluster size (it's not a hint, but not partitionmagic, 
> I'm just trying to find out the waste of space on my drive) 
> on *xp*, not 9x/me. And I'd really, REALLY, REEEALY preffer 
> not to go to the ddk...
> 
> ----------------------------------
> Peace and love,
> Tweety
> [email protected] - [email protected]
> YahooID: tweety_04_01
> 
>  
> 
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On 
> Behalf Of Simon O'Connor
> Sent: March 13, 2004 4:42 PM
> To: [email protected]
> Subject: RE: [GD-Windows] retrieving the cluster size on xp
> 
> 
> 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: [email protected]
> [mailto:[email protected]] On 
> Behalf Of tweety
> 	Sent: 11 March 2004 23:39
> 	To: [email protected]
> 	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
> 	[email protected] - [email protected]
> 	YahooID: tweety_04_01
> 	
> 	
> 
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