Experience: something you never get until just after you need it.
I've been a happy Linux user for years and generally find it better to use and manage than my work Window 7. I use LinuxMint; I previously used Ubuntu but moved away after they inflicted the Unity desktop on me - though now it also supports MATE so perhaps I should move back one day.
I've previously played with other distros in a multiboot setup but, now that I have the disk space, I want to trial a few more. I've installed elementaryOS (which looks it will become a major distro) and Astro (which turns out to be Mint with a modified GUI and heaps of astro apps pre-installed) but have had issues with openSUSE Leap 42.1 (it has an odd partitioning requirements and the USB stick may be suspect) so I'll leave it for a while.
What I've noticed before and what happened today is that the GRUB2 configuration used at boot resides in the most recently installed distro. Given that I plan to have distros come and go this is not appropriate. I want the GRUB2 configuration in my Linux Mint to be used. (I plan to keep Mint and it's well set up.) I've looked and looked but I can't find how to change the system to do that and to keep it that way. I've confirmed that the BIOS boots to the appropriate HD. That HD has a GPT partition table with a protective MBR and has a number of partitions called sda1, sda2, ... with one devoted to swap. Mint is on sda1.
I'm asking these questions here as it may avoid me having to join a Linux forum and also to avoid being told I don't know enough of the basics - I know I don't. Can anyone help - preferably with idiot-proof instructions.
