Jetpack 3.1 system sudo error

after I flash Jetpack 3.1,
when I login the system, cannot use sudo
error:
sudo must be owned by uid 0 and have the setuid bit set

(at the determin device ip step, I cancel. because it stop at the step)

now, how should I do?

Your rootfs was unpacked without sudo or else the file system type was not a Linux file system. You’ll need to flash again. If manually unpacking (not using JetPack), then use sudo for both the unpack of sample rootfs and apply_binaries.sh, as well as from actual flash. Do not use sudo for unpacking the driver package itself, nor for running JetPack (JetPack will ask for a password at the correct time).

To see what file system type a particular directory has:

df -H -T /where/ever/it/is

File types such as “VFAT” and “NTFS” do not understand Linux file systems and cannot be used without reformatting (e.g., mkfs.ext4).