I'm having problem copying files from my laptop (windows xp) to moxa (linux) using ftp. The error im getting is "533 read only file system". Tried reboot and fsck but problem remains.

mount output below:
root@Moxa:~# mount
rootfs on / type rootfs (rw)
/dev/root on / type jffs2 (ro,noatime)
proc on /proc type proc (rw,nodiratime)
/dev/ram15 on /dev type ext2 (rw)
/dev/ram0 on /var type ext2 (rw)
/dev/mtdblock3 on /tmp type jffs2 (rw,noatime)
/dev/mtdblock3 on /home type jffs2 (rw,noatime)
/dev/mtdblock3 on /etc type jffs2 (rw,noatime)
devpts on /dev/pts type devpts (rw)
/dev/hda1 on /var/hda type vfat (rw,nodiratime,fmask=0022,dmask=0022)
root@Moxa:~#

Appreciate assistance!

"/dev/root on / type jffs2 (ro,noatime)"
Above shows root "/" is read only. Maybe that is the problem there.
Try copying the file to /tmp instead.

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The problem is, I need to place the file onto the moxa unit (linux) so I could upgrade the firmware. I can view the /etc/mtab file which is exactly the same as the output of mount above (i.e. cat /etc/mtab). The question is, how can I edit this file to change "ro" into "rw" since vi /etc/mtab opens up an empty file.

Thanks in advance!

probelm solved by issuing the following:

"mount -o remount,rw /"

It changed the "ro" to "rw"