x86: How to Initiate a Fast Reboot of a Directly Mounted Root Disk or Root Dataset

You can use Fast Reboot to directly mount a root (/) disk or root dataset, then reboot to it:

1. Become superuser or assume an equivalent role.

2. Mount the root (/) disk.

   For example:

   # mount /dev/dsk/c1d0s0 /mnt

   • To mount a root dataset, type:

     # zfs mount rpool/dataset

3. Reboot the mounted disk or mounted dataset.

   For example:

   # reboot -f -- '/mnt/platform/i86pc/kernel/amd64/unix'