[jmerrilljr]

 I can make the/flash partition writable but nano gives me a new file.   

Is this the correct iperf output?:

Last login: Wed Nov  7 12:15:18 on ttys001
Johns-iMac-2:~ johnmerrill$ iperf -c 10.0.1.55 -t 60 -i 10
connect failed: Connection refused
Johns-iMac-2:~ johnmerrill$ ssh [email protected]
[email protected]'s password: 
##############################################
#                  LibreELEC                 #
#            https://libreelec.tv            #
##############################################

LibreELEC (official): 8.2.5 (Generic.x86_64)
LibreELEC:~ # iperf -c 10.0.1.55 -t 60 -i 10
Connecting to host 10.0.1.55, port 5201
[  4] local 10.0.1.55 port 57746 connected to 10.0.1.55 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-10.00  sec  31.1 GBytes  26.7 Gbits/sec    0   3.25 MBytes       
[  4]  10.00-20.00  sec  31.6 GBytes  27.1 Gbits/sec    0   3.25 MBytes       
[  4]  20.00-30.00  sec  31.5 GBytes  27.0 Gbits/sec    0   3.25 MBytes       
[  4]  30.00-40.00  sec  31.7 GBytes  27.2 Gbits/sec    0   3.25 MBytes       
[  4]  40.00-50.00  sec  31.1 GBytes  26.7 Gbits/sec    0   3.25 MBytes       
[  4]  50.00-60.00  sec  31.2 GBytes  26.8 Gbits/sec    0   3.25 MBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  4]   0.00-60.00  sec   188 GBytes  26.9 Gbits/sec    0             sender
[  4]   0.00-60.00  sec   188 GBytes  26.9 Gbits/sec                  receiver

iperf Done.
LibreELEC:~ #   

 No. You host the server on the same computer you cannect to - that only tests Linux's local network which is fast :-)  

Then my iMac is the server and my chromebox is the client? I get this:

Last login: Wed Nov  7 17:32:44 on ttys001
Johns-iMac-2:~ johnmerrill$ iperf -s
bind failed: Address already in use
Johns-iMac-2:~ johnmerrill$