Volume write-protected

[DATACOM - Nedel]

Hi,

I've created a image with mkfs.ubifs and ubinize commands, as follow:

mkfs.ubifs -r ramdisk -m 2048 -c 8190 -e 126KiB -o image.temp
ubinize -o $(BUILT)/images/image.ubifs -m 2048 -p 128KiB -s 512 ubinize.cfg

ubinize.cfg content:
[ubifs]
mode=ubi
image=PD1200.temp
vol_id=0
vol_size=900MiB
vol_type=dynamic
vol_name=ubipart
vol_alignment=1
vol_flags=autoresize

After I flash the ubi image, with nand write u-boot command, I've tried 
to mount it:

# mount -t ubifs ubi0!ubipart /mnt/flash/
UBI error: ubi_io_write: error -5 while writing 512 bytes to PEB 
8188:512, written 0 bytes
UBI error: ubi_io_write: error -5 while writing 512 bytes to PEB 
8191:512, written 0 bytes
UBI error: ubi_io_write: error -5 while writing 512 bytes to PEB 
8190:512, written 0 bytes
UBI error: ubi_io_write: error -5 while writing 512 bytes to PEB 
8189:512, written 0 bytes
UBI error: ubi_io_write: read-only mode
UBI error: erase_worker: failed to erase PEB 8188, error -30
UBI error: do_work: work failed with error code -30
UBI error: ubi_thread: ubi_bgt0d: work failed with error code -30
UBIFS error (pid 6550): ubifs_write_node: cannot write 2048 bytes to LEB 
1:2048, error -30
mount: ubi0!ubipart is write-protected, mounting read-only

I can't find where this write-protected flag is set.
Sorry but when I try to run my kernel image with ubifs debug it hangs 
before u-boot initialization.

Thanks in advance,

-- 
Werner Maurício NEDEL