problem with mounting mmcblk on dm365 evm

Hi all,

My Setup:

HW: DM365 EVM that run fs and uImage from my ubuntu vm (tftp & nfs).

DVSDK: 4.0.2

Kernel: Linux dm365-evm 2.6.32.17-davinci1

After I login to the system, I tried to write video file into sdcard (via ./encode app.).

I inserted the sdcard and tried to mount it:

root@dm365-evm:~# mount /dev/mmcblk0p1 /media/card/
mount: block device /dev/mmcblk0p1 is write-protected, mounting read-only

I tried to format it via fdisk, but the fdisk can't to save the table on the mmcblk (read only).

What I should to do?

Note: in windows & Ubuntu I can to write to this SD card...