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5.4.3 NetBSD

Booting a NetBSD kernel from GRUB is also relatively easy: first set GRUB’s root device, then load the kernel and the modules, and finally run boot.

1. Set GRUB’s root device to the partition holding the NetBSD root file system. For a disk with a NetBSD disk label, this is usually the first partition (a:). In that case, and assuming that the partition is on the first hard disk, set GRUB’s root device as follows:

   grub> insmod part_bsd
   grub> set root=(hd0,netbsd1)
   

   For a disk with a GUID Partition Table (GPT), and assuming that the NetBSD root partition is the third GPT partition, do this:

   grub> insmod part_gpt
   grub> set root=(hd0,gpt3)
   

2. Load the kernel using the command knetbsd:

   grub> knetbsd /netbsd
   

   Various options may be given to knetbsd. These options are, for the most part, the same as in the NetBSD boot loader. For instance, to boot the system in single-user mode and with verbose messages, do this:

   grub> knetbsd /netbsd -s -v
   

3. If needed, load kernel modules with the command knetbsd_module_elf. A typical example is the module for the root file system:

   grub> knetbsd_module_elf /stand/amd64/6.0/modules/ffs/ffs.kmod
   

4. Finally, run the command boot (see boot).