How to use the full sd card storage after fresh install?

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hi, freshly installed openwrt using an ext4 image downloaded from firmware selector on my openwrt. im only getting 100ish mb as usable space now. how to use the full 32gb capacity of my card? complete noob here so i need step by step guide.

[d687r02j8g]

Expand Root Script Not Working on OpenWRT 24.10.0 (Raspberry Pi 5)

Based on your solution, here is the step by step guid that worked for me: 1. Edit cmdline.txt Remove the microSD card from the Raspberry Pi and insert it into another computer. Mount the boot partition and edit cmdline.txt: sudo nano /mnt/cmdline.txt Change this line: root=PARTUUID=661a1cf7-02 to: root=/dev/mmcblk0p2 Save the file and put the microSD card back into the Raspberry Pi. 2. Boot into OpenWRT and Install Necessary Packages Power on the Raspberry Pi and SSH into OpenWRT. Up…

[frollic]

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from firmware selector on my openwrt

What's your Openwrt?

[brada4]

The simplest (sysupgrad-able) option is to use reminder of sdcard (1GB -) after squashfs as "external drive".

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thanks, worked flawlessly!
edit: instead of /mnt/cmdline.txt its /boot/cmdline.txt