Dual Booting LL 2.0 with other Ubuntu (14.04) based distros

[m654321]

A big thank you for your continued support gold_finger.
Re: zorin/LL dual boot: sda1 = zorin 9; sda2 = LL 2.0. 
Below is the output copied/pasted from terminal, which I did from zorin (though LL now shows listed in grub screen, clicking on it produces an error message about a filename being expected)

zorin9@zorin9-X71Q:~$ lsblk
NAME  MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda          8:0  0  74.5G  0 disk
├─sda1  8:1    0  37.3G  0 part /
└─sda2  8:2    0  37.3G  0 part
sdb      8:16  0 931.5G  0 disk
├─sdb1  8:17  0    1K  0 part
├─sdb2  8:18  0  9.5G  0 part [SWAP]
└─sdb5  8:21  0  922G  0 part /mnt/DATA
sr0    11:0    1  1024M  0 rom 

zorin9@zorin9-X71Q:~$ sudo blkid -c /dev/null
[sudo] password for zorin9:
/dev/sda1: UUID="ddb72935-02d6-49ea-973b-053d68e104bb" TYPE="ext4"
/dev/sda2: UUID="fcde3e47-a512-482f-9ac7-00506968b433" TYPE="ext4"
/dev/sdb2: UUID="5147c0ce-be05-47ab-be26-c623dff3d701" TYPE="swap"
/dev/sdb5: UUID="fc6ae4e0-1269-4163-a832-72df39c54914" TYPE="ext4"

zorin9@zorin9-X71Q:~$ sudo os-prober
  No volume groups found
/dev/sda2:Linux Lite 2.0 (14.04):Ubuntu:linux
zorin9@zorin9-X71Q:~$

Below is a blow-by-blow account of the dual distro set up...

Setting up a dual boot system for two distros (Linux Lite OS 2.0 with Zorin OS 9, both 64-bit)
On the first hard drive Zorin was installed, followed by LL.  On a second internal hard drive, a separate DATA partition was created to share files between the two distros, together with a separate swap file partition.
1. Set-up DVD for Zorin placed in DVD reader
2. “Install Zorin” option chosen
3. “download updates while installing” chosen
4. “something else” chosen
5. “new partition table” for sda (80 GB) and sdb (1 TB) chosen
6. The partition table ... the 80GB drive was partitioned into two parts.  The first, sda1, for installing Zorin was made a primary partition, while sda2 (for LL) was left as free space.

Device       Type Mount point Format         Size              Used            System
/dev/sda
/dev/sda1        ext4   /                    Yes                  39998 MB    unknown
free space                                                                40026 MB
/dev/sdb
/dev/sdb5        ext4    /mnt/DATA  Yes                  989999 MB    15745 MB
/dev/sdb2        swap                                                10203 MB            0 MB

7. Zorin files then copied from DVD and installed - username chosen = zorin9. Set up for zorin then completed.
8. Set-up DVD for LL placed in DVD reader
9. “execute LL”  chosen
10. “download updates while installing” chosen
11. “something else” chosen
12. Click on free space under /dev/sda
13. Click “+” and choose new partition for the free space, now made into sda2
14. Appearance of new partition table...
/mnt/DATA was retyped for sdb5 but format option NOT chosen.
Primary partition was chosen for sda2 with mount point at “/” chosen

Device Type Mount point Format         Size              Used            System
/dev/sda
/dev/sda1            ext4                                         39998 MB    10746 MB  Zorin OS 9 (9)
/dev/sda2            ext4      /                Yes                  40026 MB    unknown
/dev/sdb
/dev/sdb5            ext4    /mnt/DATA  Yes                989999 MB    15745 MB
/dev/sdb2          swap                                                10203 MB            0 MB

15. On the partition table window, the device shown for boot loader installation is given as:
/dev/sda      ATA FUJITSU MHW2080B (80 GB) 
However the option for boot loader installation on /dev/sda2 (which is the LL 2.0 partition) is the one chosen.


16. page shows that the default option this will be installed on.
However the option to change this to /dev/sda2 is chosen
17. LL  files then copied from DVD and installed - username chosen = ll2 (lower case LL!). Set up for LL then completed
18. Computer rebooted: Zorin appears on the grubscreen, but not LL.
19. Click on option for Zorin and the OS loads.
Appearance of partition table from Zorin using Gparted...
Device Type     Mount point Size              Used            Unused    Flags
/dev/sda
/dev/sda1        ext4     /                  37.25 GB      10.01 GB      27.24 GB  boot
/dev/sda2        ext4                          37.28 GB        3.65 GB      33.63 GB
/dev/sdb
/dev/sdb1        extended                  922.01 GB    -                      -
/dev/sdb5        ext4    /mnt/DATA    922.01 GB      14.66 GB    907.34 GB
/dev/sdb2        linux swap                    9.50 GB        4.00 KB        9.50 GB

20. After installing updates for Zorin a message regarding Debconf on zorin9-X71Q presents the following...
Configuring grub-pc
What do you want to do about modified configuration file grub?
Install the package maintainer’s version?
Keep the local version currently installed?
Show the difference between the two versions?
Show a side-by-side difference between the versions?
Show a 3-way difference between available versions?
Do a 3-way merge between available versions (experimental)?
Start a new shell to examine the situation?

I choose the first option in this list.

On rebooting LL and zorin appear as choices in grub screen but when LL chosen, a black screen is presented with an underlined message shown as “error: filename expected. Press any key to continue. . .”  though Zorin continues to reboot normally.

Please let me know if you need any other information.
Many thanks indeed for you time on this.
Kind regards
Mike