microSD support

[Stefan Misch]

Crane, Matthew wrote:
> The SD card association has limtied the size of sdhc to 32gb, the max
> size of a fat32 system.

I just want to give a short note that this is not true. Fat32 supports partition 
size of up to 2TiB. Microsoft artificially limited Windows 2000 and following to 
be able to create Fat32 partitions of max 32GiB. Using other tools to create 
them (such as "mkfs.vfat") it's still possible to create those partitions. And 
Windows reads and writes to them.

Of course now that there's a reasonable stable NTFS access from Linux it doesn't 
matter that much anymore but a few years back this was quite a pain in the ass.

just my 0.02€
Stefan


>  
> No doubt there's a lot of crappy SD cards out there that don't comply
> well to standard interfaces though, but unless you're really really
> skimping there's likely nothing to worry about with any common microsd
> cards.
>  
> You could even support larger cards because we aren't limited to fat32
> on a linux phone.
>  
> But has anybody found an SD card that doesn't work with existing
> hardware??   I only wish I had hardware so I can't test the few cards I
> have.. 
>  
> Matt
>  
> 
>  
> ________________________________
> 
> From: community-bounces at lists.openmoko.org
> [mailto:community-bounces at lists.openmoko.org] On Behalf Of Travis Tabbal
> Sent: Friday, May 09, 2008 9:52 AM
> To: List for Openmoko community discussion
> Subject: Re: microSD support
> 
> 
> I think he's asking if the phone will support SDHC, which is required
> for larger cards and many older devices do not support. Or perhaps if
> 8GB in particular has been tested. It would be nice to know exactly what
> is supported, as those 8GB cards are getting cheap lately. We might have
> to wait for the first phones to ship to know for sure what will or will
> not work. Right now, only the OM dev team at FIC could test it for sure,
> and they are kind of busy getting mass production going. I think I'd
> rather have them do that and test the microSD size limits later. 
> 
> 
> 
> On Fri, May 9, 2008 at 6:16 AM, Crane, Matthew <mcrane03 at harris.com>
> wrote:
> 
> 
> 
> 	>From wikipedia entry on current sd cards:
> 	
> 	Memory capacity = (C_SIZE+1) * 512 K = (222-1+1) * 512 K =
> (4194304-1+1)
> 	* 512K = 2147483648 K = 2048 GB
> 	
> 	So you're probally good.
> 	
> 
> 
> 	-----Original Message-----
> 	From: community-bounces at lists.openmoko.org
> 	[mailto:community-bounces at lists.openmoko.org] On Behalf Of
> Giorgio M.
> 	Sent: Friday, May 09, 2008 6:53 AM
> 	To: List for Openmoko community discussion
> 	Subject: microSD support
> 	
> 	
> 	I know that freerunner will support MicroSD memory.
> 	
> 	I want know wich capacity it will support?can i use 8GB
> microSD??
> 	
> 	what is the limit?
> 	
> 	thanks
> 	
> 	
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> 
> 
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