Fix Solaris 10 ZFS Error 16: Inconsistent filesystem structure.

I just installed Solaris 10 guest (ZFS root) under VirtualBox 3.2.8. After I installed the guest add-on, then rebooted the Solaris 10 guest and I had the following error:

• Error 16: Inconsistent filesystem structure
  

The instructions documented in Bug 5982 appear to work fine. Here's the complete instructions I took:

1) Boot into failsafe mode

2) Select yes to mount the ZFS root under /a:

3) Re-build the boot archive

# rm /a/platform/i86pc/boot_archive
# bootadm update-archive -f -R /a
Creating boot_archive for /a
updating /a/platform/i86pc/amd64/boot_archive
updating /a/platform/i86pc/boot_archive
# reboot 

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