I've been reading you can't install ubuntu and mint on the same computer and have the grub work with a uefi system. I tried zorin and mint on an old bios system, and both grubs won't show there either. They are both ubuntu distros. I am, or was anyway, wanting to install pinguy, another ubuntu distro and try it for awhile. So far I have Zorin, mint, avlinux, and fedora on my old 8 year old systemax dual core 2.07 ghz processor, 500 gb hard drive. At present it is set up with 5 partitions for operating systems, one for boot, and one for home. Is there a way to have multiple ubuntu systems with boot options for all of them? I install zorin, and mint disappears from the boot menu, even tho it is still on the partition. I can still get into it from files in another system, just can't use it. Same if I install mint, zorin disappears. Is there a grub program to sense them and give me a choice, or some way to rename the ubuntu grub, or even some other simple way. I'm real reluctant to do things in the terminal, but with explicit directions, I might be willing to try. Also be away I mess up a lot, even on simple things, that's why I don't like going where I can make big mistakes.
I'm trying to set up both an old desktop, above, and a fairly new laptop with uefi, and a lot of what I've read runs together in my old brain. I've really enjoyed playing with linux, even tho I'm frustrated most of the time. I get a real feeling of accomplishment when something works. Help will be appreciated.