Help with updating grub and fstab when moving root to another partition on dual boot

Question

I am using ubuntu 16.04 and window 7 on dual boot and the window C (or dev/sda3 on ubuntu) is the boot partition.

The partitions on my disk are as follow

I was trying to move my root partitions(sda1) to a larger partition(sda4) So I followed the steps given on the webpage

I was able to complete till steps 4 successfully. In the steps 5(Update grub and fstab) I didn't understand how to mount partition via gnome -> Places so I searched the web and mounted /dev/sda4 by typing the following commands mentioned on this webpage.

As mentioned in the Ubuntu Help article I tried running

gksu gedit /media//boot/grub/grub.cfg &

Where instead of I put my /dev/sda4 partitions uuid and it opened a blank grub.cfg file. So I tried running the command

gksu gedit /mnt/test_root/boot/grub/grub.cfg &

And It opened the grub.cfg in the new partition and after that i am not able to understand what to do i.e what all uuid to change and I didn't find any (hdX,Y)" to replace as per the article so I have uploaded the grub file here so can anyone tell me what all things I have to change. I have replaced the uuid of /dev/sda1 to

And Also it would be nice if anyone can tell me what the author of the article on ubuntu help meant by mounting the partition via gnome->places?

Answer 1

At first a warning, this are the first line of grub.conf-file:

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

So please don't mess this up, you would make your Ubuntu unbootable.

In your config-file you will see many places with this string:

'hd0,msdos1'

In your case you have to replace that with

'hd0,msdos4',

Use the replace-option in the edit-menu of your texteditor, this will make sure that the string is replaced everywhere in the config-file

in the file /etc/fstab you have to change the UUID of the /-partition Example:

# / was on /dev/sda1 during installation
UUID=71d24e33-33cc-4815-83cd-92ce3c141be2   /   ....

Find out the UUID of sda4 with

sudo blkid

look for sda4, copy the UUID and paste it over the old UUID. That's it...

"mount the partition via gnome -> Places option" means to open the places-menu in unity-panel, all volumes are listed there and your volume would be automounted with a single mouseclick (would be mounted to /media/. But that's not important anymore, you have the volume successfully mounted already.

Now you can follow the instructions in step 6 of the community help wiki, i am sure you are able to do... One hint for step 6: [instance] is i386-pc in your case...

Good luck...