lpi4a - LicheePi Console 4A - is there a way to start a custom OS from anything external

[lukaszgryglicki]

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Hi, sorry for asking here, but after googling I didn't find a better place to ask this:

Is there a way of starting operating system from anything external on "LicheePi Console 4A"? By external I mean: pendrive, SD card?

I wanted to try OpenBSD and FreeBSD risc-v variants, but have no idea where to start from?

[lukaszgryglicki]

I've compiled my own kernel (6.12-rc4) based on the original config: /boot/config-5.10.113-zzz-sipeed-20240531+ --> .config.

How can I enable it in a bootloader? All internet instructions are either about LILO or grub, but risc-v uses other loaders, how can I make the new kernel default, or even better, how can I enable dual-boot allowing to select which kernel I want gto run? The original one or mine own?