Hello everyone,

I have a problem with the MTD decives. I try to write to a MTD device which is on a NAND flash, therefore I use nandwrite. I got an error and found out that the MTD device is just read-only:

mtd5: 00100000 00004000 "NAND (RO) U-Boot Image"
mtd6: 00100000 00004000 "NAND (RO) DTB Image"
mtd7: 00400000 00004000 "NAND (RO) Linux Kernel Image"
mtd8: 00400000 00004000 "NAND (RO) Compressed RFS Image"
mtd9: 00f00000 00004000 "NAND (RW) JFFS2 Root File System"
mtd10: 00700000 00004000 "NAND (RW) Writable User area"

Of course that is a problem if I try to write on the devives .

How can I change the mtd device from read-only to read-write access?

Thank you for your help.

http://wiki.openmoko.org/wiki/Nandwrite
and
http://wiki.openmoko.org/wiki/NAND_b...ring_BadBlocks
may shed some light on your problem. Sorry I am not more precise - I am learning this stuff myself.

Hi davemguru,

thank you for your reply and the website links .

I forgot to post here, that I solved the problem. Sorry! The solution is that the DTB describes the MTDs as read-only. After changing this the nandwrite command works well.

Thanks again for you help.

Regards,
tompo

Hi, tompo.

I have a similar problem, i can't write to /dev/mtd0

Tell me. How can solved this problem?