can't access tty in Ubuntu Feisty Fawn Live CD

This title is an error occurred when i tried to boot from Ubuntu Feisty Fawn Live CD
before about one week.
it listen to me that error occurred for many people
specially those who have more than one hard disk

this is the exact error:
/bin/sh: can't access tty; job control turned off

i lost many time in that problem but finally i fixed it.
the solution of this error for those who have more than one hard disk is that
first unplug all the hard drives except the one you will install ubuntu on it
then try to boot again from the CD it should boot well,
but the problem is not fixed yet,
after you are in ubuntu you should type this in terminal :

sudo gedit /etc/initramfs-tools/modules

and then add this to the end of the file

piix

and then save the file and type this in terminal :

sudo update-initramfs -u

now turn off your PC , and then connect your other drives cables again and start ubuntu , it should work fine !

but what about if there where just one hard drive ?

in this case if you have floppy disk unplug it and type the above terminal commands

else i read some where that you should change your usb settings in the bios settings
to usb 1.0 instead of 2.0 ,but I'm not sure.

hope this be helpful.
enjoy.