[ /home : waiting for UUID] issue to boot

What filesystem is on that partition?

Or rather, can you confirm that the fs is "ext4"? It is a bit unclear. I had a similar issue that I resolved by booting to the livecd and editing the fstab manually with the uid.

One more, can you attach the fstab to this question?

The original filesystem on sda3 is ext4.

I am quite new in linux world, how can i attach fstab ?
In the terminal of the live cd, if i do cat /etc/fstab i see the fstab from the live CD not from my config
To access my config fstab i go to the recovery shell but cannot copy/paste etc...
Is there any way form the live CD terminal to retrieve my system information ?

 I write down what i saw in the recovery shell :

/ was on /dev/sda1 during installation UUID=2c112151-ff2f-42eb-b552-3deppb2d49c4 / ext4 errors=remount-ro 0 1
/home was on /dev/sda3 during installation UUID=67d51bb0-516b-4190-ba87-7982d4b123a2 / ext4 defaults 0 2
swap was on /dev/sda2 during installation UUID=3285efe0-d1d4-4e59-8418-786466eac2c none swap sw 0 0

Usually, the simplest is reinstalling Grub. Follow this link:
     https://help.ubuntu.com/community/Grub2#Reinstalling%20from%20LiveCD

I try the 3 methods for reinstalling grub described in the link and still have the same issue.

- When i boot, i find the grub menu with 8 versions of the kernel from linux 2.6.31-14 to -22 with their respective recovery mode.
- Whichever i select, the ubuntu logo appear and then the message appear :

One or more of the mounts listed in /etc/fstab cannot yet mounted: (ESC for recover shell)
 /home : waiting for UUID 67d51bb0-516b-4190-ba87-7985d4b123a2.

this UUID is my sda3 (data) that the system cannot find, i cannot mount it and seem invisible to my system

I want to try the method that Jon Charge propose, could anyone explain it in detail how should i proceed in the console from the live CD ?

Last but not least, if i have any mean to mount sda3 and then save my data; it is my prio 1, after i can still reformat and reinstall ubuntu, if everything fail;

Thanks for your help.

It fixed nothing because you have not a Grub2 problem.
Your file /etc/fstab is wrong.
1) Boot on Ubuntu Live CD
2) "Try without install"
3) Applications->Accessories->Terminal
4) run command
        sudo blkid
to get UUID of sda3
5) mount partition with "/" folder on /mnt
6) gedit /mnt/etc/fstab
and update UUID associated to sda3 (or replace UUID by /dev/sda3, as it was before)
7) reboot

Cf my first post i do not see sda3 with blkid

ubuntu@ubuntu:~$ sudo blkid
/dev/loop0: TYPE="squashfs"
/dev/sda1: UUID="2c112151-ff2f-42eb-b552-3de99b2d49c4" TYPE="ext4"
/dev/sda2: UUID="3285efe0-d1d4-4e59-8418-7846a66eac2c" TYPE="swap"

When i edit fstab, it seem to be fine :, the UUID that ubuntu look for at boot qnd did not find is the same that the one decribed for sda3 in fsab :

# /etc/fstab: static file system information.
#
# Use 'blkid -o value -s UUID' to print the universally unique identifier
# for a device; this may be used with UUID= as a more robust way to name
# devices that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# / was on /dev/sda1 during installation
UUID=2c112151-ff2f-42eb-b552-3de99b2d49c4 / ext4 errors=remount-ro 0 1
# /home was on /dev/sda3 during installation
UUID=67d51bb0-516b-4190-ba87-7982d4b123a2 /home ext4 defaults 0 2
# swap was on /dev/sda2 during installation
UUID=3285efe0-d1d4-4e59-8418-7846a66eac2c none swap sw 0 0
/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0

So i do not see what i shoud change at step 6)

I was able to mount manually sda3 by :

ubuntu@ubuntu:~$ sudo mount /dev/sda3 /mnt
mount: you must specify the filesystem type
ubuntu@ubuntu:~$ sudo mount /dev/sda3 /mnt -t ext4

But i can t access some of my file/folder marked by a cross for which access was restricted ! The strange things is that these files contains confidential data...? I don t want to be paranoiac but isn it strange ?

I know understand the content of delance message

And execute step 6 with success, now my issue is solved.

I learn a lot about linux since a week now !
I have all my data !
I was really paranoiac !

Thanks for your help, appreciated !!
Loic