/dev/disk/by-uuid does not exist

Linux (debian/testing) cannot boot after installing kernel 3.9.1

http://unix.stackexchange.com/questions/85423/linux-debian-testing-cannot-boot-after-installing-kernel-3-9-1

Debacher-Blog

/dev/disk/by-uuid does not exist

http://www.debacher.de/ublog/2010/06/devdiskby-uuid-does-not-exist/

[SOLVED] ALERT! /dev/disk/by-uuid/xxxxxxxx-xxxx-xxxx-xx$ does not exist   

http://ubuntuforums.org/showthread.php?t=813090

In the grub,how to change the delay time before system start?     

http://www.linuxforums.org/forum/red-hat-fedora-linux/162335-grub-how-change-delay-time-before-system-start.html