Late 2012 Mac mini will not open Startup Manager for Debian USB install
A late 2012 cannot reach the boot choice screen needed to reinstall Debian from a USB drive. The machine is already running Debian, and Debian had been installed on this same before.
Normally, holding the Option key during opens so the USB can be selected. Now, a normal goes straight into the current Debian system.
Holding Option does not show , and the stops there until it is forced off with the power button or by unplugging power. Several hours of troubleshooting have not solved the install- problem.
Key points
- The is a late 2012 model already running Debian.
- The goal is to reinstall Debian from a USB drive.
- Holding Option at no longer opens .
- Normal still boots into the current Debian system.
- When Option is held, the machine must be forced off to recover.