How to find free space on connected USB flash drive?

[JoeSchmoe007]

I have USB flash drive connected to RT-N66U. It is used only to save traffic history. I don't have any AI Cloud or USB applications active.

How to find free space on connected USB flash drive? FWIW I now run Merlin's 374.40 firmware.

 

[JoeSchmoe007]

I'll answer my own question (should've tried harder before I asked ):

1. Enable telnet access via Administration/System/Miscellaneous in web interface.
2. Telnet into the router and use the same credentials as to login to web interface.
3. Run "df" command.
4. Disable telnet access.

 

[RMerlin]

Or, simply log on your router's webui, and click on the USB disk. It will display the total space, and remaining space.