Netgear r6220 use of reserved 60 MiB partition


I have Netgear R6220 and I'm trying use more space in my router, I read this:

but, dont works and I can't understand.



I forgot:

root@OpenWrt:~# df -h
Filesystem                Size      Used Available Use% Mounted on
/dev/root                 2.8M      2.8M         0 100% /rom
tmpfs                    60.5M    260.0K     60.2M   0% /tmp
/dev/ubi0_1              18.3M      1.3M     16.0M   8% /overlay
overlayfs:/overlay       18.3M      1.3M     16.0M   8% /
tmpfs                   512.0K         0    512.0K   0% /dev
/dev/ubi1_0              44.6M    128.0K     42.1M   0% /tmp/ubi1

Hi there! I have a similar question - how to repartition flash for using whole space?
As I understand, by the wiki information we can mount reserved partition (it's useless in my mind - what can I do with separate partition at the router?), but I'd like merge it instead. Is it possible?

I've tried to move /overlay to the biggest partition according the wiki, but this doesn't work. How can I do this? I found script to resolve similar problem - can I use this script?