A few months ago, my dual-boot Mac laptop ran High Sierra and Mountain Lion. They talked to each other. Now, having recently "upgraded" to Mohave, they are having communication issues. So far, here are some curious results of switching to Mohave.
Some apps create their own folders under Mohave. Mountain Lion doesn't see those folders! I have to ensure I create a folder within a "known" folder (already used by Mountain Lion) or choose a "known" folder when I'm running Mohave. I tried creating an alias to a Mohave-created folder; when I clicked on the alias under Mountain Lion, I got the familiar Mac message to either "fix or delete" the alias.
When I am running Mohave, System Preferences > Startup Disk sees my 10.8 Mountain Lion volume, just like High Sierra did. When I am running Mountain Lion, it doesn't see the Mohave volume! It could see the High Sierra volume. So, to switch to Mohave, I have to use the ancient keystroke startup method (hold down Option while pressing the power button).
This is also new: When I use Option-power button to choose Mohave as the startup volume, unlike High Sierra, Mohave doesn't display the two potential bootup volumes on the monitor plugged into my laptop; it only shows the choice directly on the laptop's screen. Only near the end of the starting-up process does Mohave display what it's doing on the external monitor.
What other odd things has anyone noted when running Mohave in a dual-boot situation? Has anyone heard of a way to get Mohave and Mountain Lion to "see" each other better?
Some apps create their own folders under Mohave. Mountain Lion doesn't see those folders! I have to ensure I create a folder within a "known" folder (already used by Mountain Lion) or choose a "known" folder when I'm running Mohave. I tried creating an alias to a Mohave-created folder; when I clicked on the alias under Mountain Lion, I got the familiar Mac message to either "fix or delete" the alias.
When I am running Mohave, System Preferences > Startup Disk sees my 10.8 Mountain Lion volume, just like High Sierra did. When I am running Mountain Lion, it doesn't see the Mohave volume! It could see the High Sierra volume. So, to switch to Mohave, I have to use the ancient keystroke startup method (hold down Option while pressing the power button).
This is also new: When I use Option-power button to choose Mohave as the startup volume, unlike High Sierra, Mohave doesn't display the two potential bootup volumes on the monitor plugged into my laptop; it only shows the choice directly on the laptop's screen. Only near the end of the starting-up process does Mohave display what it's doing on the external monitor.
What other odd things has anyone noted when running Mohave in a dual-boot situation? Has anyone heard of a way to get Mohave and Mountain Lion to "see" each other better?
