I am trying to build my own image to free up the unused disk space.
According to the datasheet, R7500v2 should have 512 RAM. But the LEDE image only leaves about 20MB space for extra packages.
I found this Tutorial for R7800. I followed the procedure except that I have changed the source to be https://git.openwrt.org/openwrt/openwrt.git , every occurrence of "17.01.2" to "17.01.4" and edit R7500v2's dts file instead that of R7800.
However, I found the default partition setting of R7500v2 is almost the same as R7800.
Knowing that R7500v2 has 512M RAM, which is much more than R7800's 128M, I guess even if I delete the "netgear" part and free up about 40M space, I am still not making use of the full space.
Since I don't know very much of these stuff, I am asking for a better partition settings for Netgear R7500v2, which can make full use of its 512M RAM. Any other suggestings for making use of the full space without building an image are also appreciated.