I have expanded my Yun with a 8GB microSD card and installed node.js and node-serialport.js, and everything was OK.
The next step was to edit the /etc/inittab, and before doing it I wanted to check whether unplugging the microSD card, I could access SSH via serial port COM with the root file system that is in the flash memory.
Once I was checked that it was Ok. I wanted to plug the microSD card again to work with my Yun expanded, so I unplugged my Yun, plug the microSD card and plug the Yun again and when I enter via SSH and typed:
root@ofcyun:/# df -h / /mnt/sda1
Filesystem Size Used Available Use% Mounted on
rootfs 6.9M 1.3M 5.7M 19% /
df: /mnt/sda1: can't find mount point
So it doesn't recognize the microSD card, I don't get errors , and I didn't edit the /etc/config/fstab.
Once I have plugged the microSD card I reboot both the Linux and Arduino parts.
So, Are there something that i have missed?