Smoothie SD Card Access?

I'm trying to get access to Smoothieware's SD card so I can update config without having to pop it out, walk it over to my pc, edit it, and pop it back in.

I only see sda in the /etc folder, no sda1 or any other variations.
In /etc/fstab I see only these two items:

PARTUUID=2bcbe806-01  /boot           vfat    defaults          0       2
PARTUUID=2bcbe806-02  /               ext4    defaults,noatime  0       1

Is the second one, 'ext4' the Smoothieware's SD card?
How to I mount and unmount it?
Any gotcha's as far as editing the config file on Smoothie's SD card that I should be careful of?

Thanks!

No, that's your root drive, as visible (/). If you unmount that you'll crash the system :wink:

The Pi isn't automatically mounting your smoothie's disk storage. Check dmesg to look up what it's called (and if it is even detected), then look into mounting it automatically through fstab.

Thanks!
I was looking right at it and didn't realize it: /dev/sda

sudo mount /dev/sda /mnt
nano /mnt/config.txt
sudo umount /mnt

Thanks!!!