Busybox prompts can't access TTY. Job control turned off

Http://busybox.net/FAQ.html#job_control
Job control will be turned off since your shell can not obtain a controlling terminal. this typically happens when you run your shell on/dev/console. the kernel will not provide a controlling terminal on the/dev/console device. your shocould run your shell on a normal tty such as tty1 or ttys0 and everything will work perfectly. if you really want your shell to run on/dev/console, then you can hack your kernel (if you are into that sortof thing) by changing drivers/Char/tty_io.c to change the lines where it sets "noctty = 1;" to instead set it to "0 ". I recommend you instead run your shell on a real console...

 

When using the init of busybox, you can use it in the inittab:
Tty1: askfirst:-/bin/sh
The format is not correct. Check the format first, mainly inThe preceding ttys0 is used to specify the actual terminal.. If simpleinit. C (user/init/sampleinit. C) in uClinux is used, the format is:
Tty1:/bin/sh