To update boot codes. The file to edit resides on the boot partition. Typically this is the sdcard mmcblk0p1 $ sudo -s # mount /mnt/mmcblk0p1 # cd /mnt/mmcblk0p1 # vi bootcmd.src Look for the line with nozswap and then continue the line with desired boot codes, e.g., waitusb=5:LABEL=mypen tce=LABEL=mypen tz=PST+8PDT,M3.2.0/2,M11.1.0/2 desktop=flwm_topside # update_ubootcmd.sh When successfully completed, reboot to effect. # reboot