OpenWrt Forum Archive

Topic: NEXX WT3020F just have 4MB instead 8M!!!

The content of this topic has been archived on 21 Apr 2018. There are no obvious gaps in this topic, but there may still be some posts missing at the end.


I bought a NEXX WT3020F in
and I installed openWrt following the instructions in -> Flash firmware

After that I get that:

ssh root@
root@'s password: 

BusyBox v1.23.2 (2016-01-02 09:17:45 CET) built-in shell (ash)

  _______                     ________        __
 |       |.-----.-----.-----.|  |  |  |.----.|  |_
 |   -   ||  _  |  -__|     ||  |  |  ||   _||   _|
 |_______||   __|_____|__|__||________||__|  |____|
          |__| W I R E L E S S   F R E E D O M
 CHAOS CALMER (15.05.1, r48532)
  * 1 1/2 oz Gin            Shake with a glassful
  * 1/4 oz Triple Sec       of broken ice and pour
  * 3/4 oz Lime Juice       unstrained into a goblet.
  * 1 1/2 oz Orange Juice
  * 1 tsp. Grenadine Syrup
root@OpenWrt:~# df -h 
Filesystem                Size      Used Available Use% Mounted on
rootfs                    4.4M      4.3M     56.0K  99% /
/dev/root                 2.3M      2.3M         0 100% /rom
tmpfs                    30.0M    420.0K     29.6M   1% /tmp
/dev/mtdblock6            4.4M      4.3M     56.0K  99% /overlay
overlayfs:/overlay        4.4M      4.3M     56.0K  99% /
tmpfs                   512.0K         0    512.0K   0% /dev

Where is the 8MB of space?

did Gearbest give me a WT3020A instead a WT3020F?

(Last edited by cyttorak on 31 Jan 2018, 21:55)

You have 2.3 MB used by the rootfs (mounted on /rom), plus 4.4 MB for the overlay - what you don't see (as it's not a mountable filesystem) is another ~1.3-1.5 MB for the kernel; which (also counting the space needed for bootloader, calibration data, etc.) amounts to 8 MB.

Thanks a lot.

What I really am trying to do is that:

But I don't have enough space to complete the installation of ettercap-ng , reaver, tcpdump, urlsnarf, ettercap, nmap , mdk3.

It is because of that I thought my WT3020F had less space than it should have.

Are there any files I could remove in order to gaim free space?

(Last edited by cyttorak on 31 Jan 2018, 23:29)

Yes, I'd start with removing ettercap-ng, reaver, tcpdump, urlsnarf, ettercap, nmap and mdk3.

(this may sound snarky, but 8 MB really isn't a whole lot - sufficient for what you'd usually call a full featured router, but you're looking at packages which are more likely to be found on development desktops)

usb expansion worked like a charm for me.  had to revert all the way back to 15.x to get it working though. and, since 15.x failsafe is broken for wt3020, usb acts like a failsafe.  if you ever bork your setup, just pull the stick out and you'll revert to the onboard settings.

this link was pretty helpful for 15.x (can't link yet)

would love to get usb extension working on lede 17.x though

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