piCore Enable Syslog
To obtain logging in /var/log/messages you can enable syslog in the boot options.
First mount the first partition (FAT) of the SD-card to the existing mount-point (/mnt/mmcblk0p1).
sudo mount /dev/mmcblk0p1 /mnt/mmcblk0p1
Next add the 'syslog' parameter to the command line options.
sudo vi /mnt/mmcblk0p1/cmdline.txt
add:
syslog