Re: [Gumstix-users] re ading/writing/booting from micro SD card

[Dustin D <jos...@gm...>]

I've successfully used 2Gb Sandisk cards as well as of yesterday.


Dave Hylands wrote:
> 
> Hi Andrzej,
> 
>> 1. Is it possible to flush new fs and uImage from uSD and if so what
>> is the procedure?  There was a comment that one cannot flush from CF
>> flash cards in the latest boot version (no explicit mention of uSD
>> though).  Which leads me to the second question
> 
> I assume you meant flash and not flush. Yes - I do this all the time.
> 
> You use
> 
> mmcinit
> 
> to initialize the mmc stuff from within u-boot, and then
> 
> fatload mmc 0 a2000000 filename
> 
> to load a file from the mmc card.
> 
>> 2. Do I need to format the uSD card in any way prior to use on linux?
>> I have ScanDisk uSD which I picked up at Staples.
> 
> It should already be formatted using FAT32, which is the right format
> for u-boot.
> 
>> 3. Is there an upper limit on the uSD size (1, 2 4Gb) that gumstix can
>> address?
> 
> Not sure. I've used 1Gb SD cards.
> 
>> 3. What is the procedure for transfering files between linux on my
>> Fedora6 (running inside WMPlayer) and my gumstix. (Here is where my
>> linux ignorance is showing). Would Fedoara detect and mount the flash
>> card reader attached to my PC or would I have to mount it manually, or
>> do I have to FTP the file to windows and then put it onto the flash
>> card from there.
> 
> What I normally do is to boot into linux on the gumstix, and then
> transfer the files using wget on the SD card, and then reboot and drop
> into u-boot to actually burn them.
> 
> You can also use scp.
> 
> Or, if you have a way of reading/writing the SD card on your host PC,
> you can just write them directly to the SD card, and then physically
> move the SD card over to the gumstix. The gumstix doesn't seem to like
> dealing with insertion/removals so you pretty much need to reboot.
> 
>> 4. General question, given my stix configuration what would be the
>> fastest method for flushing new fs and uImage? Thus far I've done it
>> over the serial link only and I don't think I can handel that speed
>> any longer.
> 
> See above.
> 
> -- 
> Dave Hylands
> Vancouver, BC, Canada
> http://www.DaveHylands.com/
> 
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