On the environment you can change:
$this->bbcode_second_pass_code('', 'ncip=10.10.10.5
ncipk=10.10.10.4')
And it will send output to a different machine, think its explained at top of the kirkwood forum?
Yes with fans, all you can do is find dimensions of the current fan, and then search for if there is a replacement. For 80x080x20 the choice was *very* limited, but the swif2 is well respected, sold on by noctua etc ...
So you'll need to search for 40x40x10 fans, and see what is available. I wouldn't be surprised if the resistor to lower the speed was widely abaible, however I have seen the like before ... ah yes see here, must be other similar options:
https://www.quietpc.com/rc56 and if handy with a soldering iron
http://pcbheaven.com/circuitpages/A_Simple_Way_To_Reduce_A_DC_Fan_Speed/Ah good that you removed the ext options. It should now be able to boot from sda2, so try (re0moving uEnv.txt on sda1, and see if uboot fines the one on sda2 in /boot/uEnv.txt. Also make sure you have a zImage in sdat2 /boot ...
wait a mo:
$this->bbcode_second_pass_code('', 'Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent 64bit flex_bg sparse_super large_file huge_file dir_nlink extra_isize metadata_csum')
still has 64bit and metadata_csum - thats what we wanted to remove ...