Hi. I have used usb storage like rootfs but without overlayfs. I build the kernel following the instructions https://forum.archive.openwrt.org/viewtopic.php?id=18570 but for ath79.
While loading:
[ 5.383953] VFS: Cannot open root device "sda1" or unknown-block(0,0): error -6
[ 5.391512] Please append a correct "root=" boot option; here are the available partitions:
Help me please.
Enabled CONFIG_USB_UHCI_HCD in the kernel, after that everything worked