It should be possible, someone did this for another Seagate NAS:
http://forums.seagate.com/t5/BlackArmor-NAS-Network-Storage/Install-Debian-GNU-Linux-5-0-7-Lenny-on-the-Blackarmor-220-NAS/m-p/85596/highlight/true#M3290
http://www.noerenberg.de/hajo/pub/seagate-blackarmor-nas.txt
Edit: He used seagate kernel similar to pogoplug's 2.6.22 kernel. The binary is only compatible with Lenny so I guess I would have to use that:
"Do not *upgrade* the Debian system. The linux kernel image (NAND
partition 4) is compatible with Debian Lenny. The latest Debian versions
(Squeeze ...) require an updated kernel udev subsystem and therefore
you would have to update the kernel image first. As of now, nobody
has done this laborious work (forward port Seagates h/w-specific patches,
compile and test the kernel)"
So I suppose it's not possible to run 2.6.22 with debian squeeze. If anyone has an updated ufsd.ko that works in squeeze that woud be great...maybe from a newer device.
Edited 2 time(s). Last edit at 07/18/2012 02:46PM by CoolkcaH.