@Kit-Bishop : try this for usb storage https://community.onion.io/topic/592/daft-question-re-usb-storage-as-rootfs/12

@WereCatf : +1 for open source

I had the same issue, on Omega2, found this recent post that helped with block-mount:

https://community.onion.io/topic/1234/is-block-mount-gone-where-is-block/3

In the file /etc/opkg/distfeeds.conf , uncomment (delete the #) these lines:

src/gz reboot_core http://downloads.lede-project.org/snapshots/targets/ramips/mt7688/packages
src/gz reboot_base http://downloads.lede-project.org/snapshots/packages/mipsel_24kc/base

reboot_core contains block-mount
reboot_base contains e2fsprogs

Then run opkg update and try installing.