Updated Asus Bios to 1102 using Alt-F2 during boot (updated Bios file was loaded onto my USB stick). Bios successfully updated.
At first boot after bios update I went into Bios setup and configured in bios SATA Mode to AHCI (was SATA)
After second boot up I destroyed dawpool and did a format to recognize the disks again:
root@dawbckup:~# format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c0d1
/pci@0,0/pci-ide@6/ide@0/cmdk@1,0
1. c7t0d0
/pci@0,0/pci1043,82e2@9/disk@0,0
2. c7t1d0
/pci@0,0/pci1043,82e2@9/disk@1,0
3. c7t2d0
/pci@0,0/pci1043,82e2@9/disk@2,0
4. c7t3d0
/pci@0,0/pci1043,82e2@9/disk@3,0
Specify disk (enter its number): ^C
root@dawbckup:~#
zpool create dawpool raidz c7t0d0 c7t1d0 c7t2d0 spare c7t3d0
root@dawbckup:~# zpool create dawpool raidz c7t0d0 c7t1d0 c7t2d0 spare c7t3d0
invalid vdev specification
use '-f' to override the following errors:
/dev/dsk/c7t0d0s0 is part of exported or potentially active ZFS pool dawpool. Please see zpool(1M).
root@dawbckup:~# zpool create -f dawpool raidz c7t0d0 c7t1d0 c7t2d0 spare c7t3d0
root@dawbckup:~#
root@dawbckup:~# zpool status
pool: dawpool
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
dawpool ONLINE 0 0 0
raidz1 ONLINE 0 0 0
c7t0d0 ONLINE 0 0 0
c7t1d0 ONLINE 0 0 0
c7t2d0 ONLINE 0 0 0
spares
c7t3d0 AVAIL
errors: No known data errors
pool: rpool
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
rpool ONLINE 0 0 0
c0d1s0 ONLINE 0 0 0
errors: No known data errors
root@dawbckup:~#