replace the kernel of Debian on BBB

I download linux kernel code from github, configure, build it.when I replace the kernel of the Debian on BBB with my own builded kernel,there is a peoblem, I can’t fix it

modprobe: chdir(3.8.13): No such file or directory

Gave up waiting for root device. Common problems:

  • Boot args (cat /proc/cmdline)

  • Check rootdelay= (did the system wait long enough?)

  • Check root= (did the system wait for the right device?)

  • Missing modules (cat /proc/modules; ls /dev)

ALERT! /dev/disk/by-uuid/e73097d0-c928-4411-97e3-cd838b56ac18 does not exist. Dropping to a shell!

modprobe: chdir(3.8.13): No such 蝘le or directory

modprobe: chdir(3.8.13): No such file or directory

modprobe: chdir(3.8.13): No such file or directory

modprobe: chdir(3.8.13): No such file or directory

modprobe: chdir(3.8.13): No such file or directory

modprobe: chdir(3.8.13): No such file or directory

BusyBox v1.20.2 (Debian 1:1.20.0-7) built-in shell (ash)

Enter ‘help’ for a list of built-in commands.

/bin/sh: can’t access tty; job control turned off

(initramfs)

please someone ,who can help me ?