NAND and vfat
nancydreaming at gmail.com
Sun Jun 8 22:58:47 EDT 2008
On Mon, Jun 9, 2008 at 6:49 AM, Alaor Koppe <alakoppe at gmail.com> wrote:
> Hi Nancy
> I followed what you said but something is wrong. I'm trying to mount
> my board as a device to windows, using the vfat.img as a Backing
> Storage File (with gadget driver).
> Well, I created the file with 50 Mb, indicated the file to driver and
> formated the file as vfat at Windows. I put files in this volume at
> Windows and all works fine, but when I mount the vfat.img at board
> with mount command (-t vfat -o loop vfat.img /mnt/fat), I can't see
> the files that I put with Windows.
> The gadget driver is working fine, and the mount command doesn't
> return error when I mount the loopback file.
> Can be an error on Vfat fs in uclinux? (I'm using 188.8.131.52-hsc0)?
I think you miss some important VFAT meta data which should be
written on Nand, but due to your wrong operations, they do not.
# dd bs=1M count=10 if=/dev/zero of=vfat.img
# loseup /dev/loop0 vfat.img
# modprobe g_file_storage file=/dev/loop0
On windows side:
fast FAT or FAT32 format
cp files ...
unload USB device
# rmmod g_file_storage
# mount -t vfat -o loop vfat.img /mnt/fat
# ls /mnt/fat
See it ?
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