ubuntu@tegra-ubuntu:/boot/extlinux$pwd /boot/extlinux ubuntu@tegra-ubuntu:/boot/extlinux$ll total 20 drwxr-xr-x 2 root root 4096 Oct 23 2018 ./ drwxr-xr-x 5 root root 12288 Oct 23 2018 ../ -rw-r--r-- 1 root root 964 Oct 23 2018 extlinux.conf ubuntu@tegra-ubuntu:/boot/extlinux$view extlinux.conf TIMEOUT 30 DEFAULT primary MENU TITLE p2371-2180 eMMC boot options LABEL primary MENU LABEL primary kernel LINUX /boot/Image INITRD /boot/initrd FDT /boot/tegra210-.dtb APPEND fbcon=map:0 console=tty0 console=ttyS0,115200n8 androidboot.modem=none androidboot.serialno=P2180A00P00940c003fd androidboot.security=non-secure tegraid=21.1.2.0.0 ddr_die=2048M@2048M ddr_die=2048M@4096M section=256M memtype=0 usb_port_owner_info=0 lane_owner_info=0 emc_max_dvfs=0 touch_id=0@63 video=tegrafb no_console_suspend=1 debug_uartport=lsport,0 earlyprintk=uart8250-32bit,0x70006000 maxcpus=4 usbcore.old_scheme_first=1 lp0_vec=${lp0_vec} nvdumper_reserved=${nvdumper_reserved} core_edp_mv=1125 core_edp_ma=4000 gpt android.kerneltype=normal androidboot.touch_vendor_id=0 androidboot.touch_panel_id=63 androidboot.touch_feature=0 androidboot.bootreason=pmc:software_reset,pmic:0x0 net.ifnames=0 root=/dev/mmcblk0p1 rw rootwait