bea...@sdf.org (beaker) writes: >I think Elst's comment is right, that there isn't actually a primary >NetBSD bootloader present on the referenced partition so one needs >to be installed, though I'm unsure how to do this with non-UEFI gpt >partitioning; do I use gpt(8) or installboot(8) and where to install >it? If I install it to gpt6 (bios) partition is wipes out GRUB (know >this from experience...), but if I install it on gpt3 (FFS) is it >going to mess up the existing file system?
You install it with installboot to the FFS partition. Chainloading means that the first partition block is loaded and executed. The FFS layout leaves space for an 8kb bootloader (including a hole for a BSD disklabel, but which isn't used here). Installboot knows how to handle this.