Originally Posted by Muralita
1. Remove numerous Ubuntu installs and revert to 14.04 in my 500gb disc (60gb is too old and could fail owing to its age)
That is not complicated.
There are 2 things that you have to determine before removing any linux OS. You have to make sure that Ubuntu 14.04 on the 500GB drive is in control of the Grub menu that you see when you boot. And you have to make sure that the 500GB drive is first in the computer's boot sequence.
Open your BIOS settings and make sure the 500GB drive is listed first.
Then boot into Ubuntu 14.04 on the 500GB drive. Open a terminal.
Re-install Grub to the MBR of the 500GB drive with this command:
sudo grub-install /dev/sdX
- where X is the 500GB drive - sda? sdb?
On your old system, it could be hda and hdb.
Now you can remove the old 60GB drive from the system anytime you want, or erase the contents. After you do that, you can run
to remove the old linux menu entries from the Grub menu.