How to clean Tegra B's file from Tegra A

Now I can not enter my Tegra B, maybe cause I set the recording directory to local storage and make it full.
So how can I clean the file from Tegra A?

Dear mrsunwen,

There are two way to access to TegraB.

  1. ssh
    TegraA : 10.42.0.28, TegraB : 10.42.0.29
    on TegraA terminal.
    $ssh nvidia@10.42.0.29

  2. minicom
    On host machine terminal.
    $sudo minicom -D /dev/ttyUSB6

    Please refer to below link in detail for minicom setup.
    https://docs.nvidia.com/drive/active/5.0.10.3L/nvvib_docs/index.html#page/NVIDIA%20DRIVE%20Linux%20SDK%20Development%20Guide%2FUtilities%2Fminicom.html

Dear Steve,

Now I cannot open my TegraA.
I tried $ssh nvidia@10.42.0.28 in TegraB but it appeared ‘1 package can bu update 0 update are security updates. ***/dev/mmcblk0p3 will be checked for errors at next reboot ***’

Thank you!