Issue when installing Bullseye on ReadyNAS Duo v2 (1 reply)

Hello all,

I'm trying to install Debian Bullseye on my old NETGEAR ReadyNAS Duo v2. I am getting to the point where I should configure Network hardware, but the installer says "No network device found"?! The NAS is working fine with the stock OS, so it is not about a hardware malfunctioning.

I've created the uImage using this commands:

wget http://ftp.fr.debian.org/debian/dists/bullseye/main/installer-armel/current/images/kirkwood/netboot/marvell/guruplug/uImage
wget http://ftp.fr.debian.org/debian/dists/bullseye/main/installer-armel/current/images/kirkwood/netboot/marvell/guruplug/uInitrd
wget http://ftp.fr.debian.org/debian/dists/bullseye/main/installer-armel/current/images/kirkwood/netboot/vmlinuz-5.10.0-28-marvell
wget http://ftp.fr.debian.org/debian/dists/bullseye/main/installer-armel/current/images/kirkwood/device-tree/kirkwood-netgear_readynas_duo_v2.dtb

sudo apt install u-boot-tools

cat vmlinuz-5.10.0-28-marvell kirkwood-netgear_readynas_duo_v2.dtb > vmlinuz_rnduov2

mkimage -A arm -O linux -T multi -C none -a 0x00008000 -e 0x00008000 -n "Debian Bullseye armel kernel" -d vmlinuz_rnduov2 uImage_rnduov2

After that I follow these steps:

usb reset
fatload usb 0:1 0x1200000 /uImage_rnduov2
fatload usb 0:1 0x2000000 /uInitrd
usb stop
set bootargs console=ttyS0,115200 earlyprintk
bootm 0x1200000 0x2000000

The Debian installer starts as usual, but it later fails at the network configuration step.
I tried with both plugged and unplugged ethernet cable, same result. I assume I missed to upload the proper driver, just don't know when and how to do it?