On the Milk-V Jupiter 2 How do I get the grub menu to display on the HDMI device on boot-up. I want to use grub to multi boot different operating systems.
That board is based around the Spacemit K3 SoC’s. You are posting to a forum created by StarFive. So the concentration of knowledge about Spacemit will be low, maybe try asking on the Milk-v forums at https://community.milkv.io/
Or on the Spacemit forums at https://forum.spacemit.com/
There is a project that might help you avoid needing to use a serial cable to do what you want. But it will probably not do exactly what you want
I only know about this project because it also supports boards based around the StarFive JH7110 SoC’s
The Milk-v forums at https://community.milkv.io/ system is broken and not sending validation emails when you signup. I will try the Spacemit forums.
I managed to resolve this by flashing this image to the System.