Missing /sys/bus/iio directory after Upgrade. (Ubuntu 14.04)

Hey community,
The /sys/bus/iio directory has gone missing after performing a system update.
I have been developing an application using the UP Board for the past month for a school project where I am reading in a raw voltage to one of the GPIO pins from the directory /sys/bus/iio/devices/iio\:device0/in_voltage_raw.
Is this just a case of a missing installation package or has it been moved?
Thanks,
DJI
The /sys/bus/iio directory has gone missing after performing a system update.
I have been developing an application using the UP Board for the past month for a school project where I am reading in a raw voltage to one of the GPIO pins from the directory /sys/bus/iio/devices/iio\:device0/in_voltage_raw.
Is this just a case of a missing installation package or has it been moved?
Thanks,
DJI
Comments
After I installed the most recent update the grub defaulted to Linux 4.4.0-47-generic instead of Linux 4.2.0-3-upboard. This resolved the discrepancy in the file system hierarchy.
In future, use the following to update/upgrade: And then this to remove the other Linux boot options. Reboot and double check that you are using the Up Board image (ex. Linux 4.2.0-3-upboard). DJI