CT3003 firmware has only 17M disk space

Installing and Using OpenWrt
1

Hi,
I newly flash Openwrt 23.05.3 into CT3003 (firmware).
Follow the Openwrt guide.
And here is the basic device infomation:
Cetron CT3003
Platform: mediatek/filogic
RAM: 256M
Flash: 128M

But after flashed , the disk space shows only 17M, far more less than 128M.

openwrt-ct3003
openwrt-ct30031942×1510 188 KB

My question is,

  1. what define the flash space used for firmware, U-Boot or firmware itself? According to another third-party guidance, first flashing the U-Boot then the firmware, they get 100M+ disk space.
  2. what could I do next to get more space, "extroot" on the current firmware or re-flash?

Any response is appreciated!

2

You can always look into the source link code you already used like
https://git.openwrt.org/?p=openwrt/openwrt.git;a=blobdiff;f=target/linux/mediatek/image/filogic.mk;h=571815249ff46d5316b8d01933df380e22b91201;hp=a799c7b5ee8813a3eccd3c1b0d8232b4cd0632d6;hb=907e9e0bd3df456b32921893cf6ef1b54117d983;hpb=58bb5e147ae50391c29c53890f47e3a5420bbfad

But the partitions are usually defined in the dts file
https://git.openwrt.org/?p=openwrt/openwrt.git;a=blob;f=target/linux/mediatek/dts/mt7981b-cetron-ct3003.dts;h=d39083ffb0d61473d894542d50489f61c043e8d0;hb=907e9e0bd3df456b32921893cf6ef1b54117d983

3 
 152                         partition@580000 {
 153                                 label = "ubi";
 154                                 reg = <0x0580000 0x2000000>;
 155                         };
 156

and according to the article [OpenWrt Wiki] The OpenWrt Flash Layout, the firmware installed in the "ubi" partition, right?
And size 0x2000000 is about 33.5M.

It seems little I can do with this firmware.

Thanks for response.

1 Like
4

Only a few devices, mainly recent Xiaomis, have been altered to utilize the whole flash, since it's not Openwrt standard.

Another option is to buy a device with a usb port, and use extroot.

5

Thanks for response. Good information.
I’ve setup this device CT
3003 as an AP. And 17M potential is enough for an AP.