OS/X, Virtual Box, Core Upgrade always crashes HA

I have 3 HA’s running under VirtualBox on older Mac computers.

2 of them work perfectly fine, and always process a Home Assistant Core Upgrade without problems.

The 3rd, not so much. It runs reliably, never crashing - except when I try to process such an upgrade. (It’s at my son’s house.)

Given that this is likely a very niche issue, can someone point me in the right direction of what to look for in the logs, either within HA or the Virtual Box environment? i.e. the location of the logs, what i might be looking for, etc?