The goflex net install instructions are missing a step.
After creating and mounting the /tmp/alarm directory
the instructions don't cd to /tmp/alarm
so when you download the filesystem it uses up all the freespace in /tmp.
In my case, I recongized the issue and moved to /tmp/alarm, however I failed to delete the incomplete tar file.
This created a situation where the uboot install failed because the space was full.
I was able to address this by deleting the filesystem.tar.gz file in /tmp, and rerunning the uboot installer.
but it would probably be a good idea to add the step to the instrucitons.
Thanks
Tom