Fix Gave up waiting for root device on Ubuntu Boot Error

Error Message on displaying

 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/920903aa-762f-40d2-8126-87f4b0e6f975 does not exist. Dropping to a shell!

BusyBox v1.19.3 (Ubuntu 1:1.10.3-7ubuntu1.1) built-in shell (ash)
Enter 'help' for a lost of built-in commands.
(initramfs)

First Check Metered 
*Step 01
Go to Bios and Check your Sata Mode AHCI , IDE Or RAID
You using Sata drive without Raid first select your Bios Sata Mode as "AHCI"
Then Exit your Bios with Save and Exit

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If Not Work Use This Steps,

#Source Link - http://blog.wittchen.biz.pl/ubuntu-system-boot-problem
#Fix Method  - http://ubuntuforums.org/showthread.php?t=1691436
#Fix Method  - https://ckahiaku.wordpress.com/how-tos/ubuntu-issues-solved/how-to-fix-an-ubuntu-errorinitramfs-_/

#Full Tutorial - http://www.dedoimedo.com/computers/ubuntu-initrd-bug.html 

Posted in: Linux-Bugs