My Solaris10 cannot boot after I made an error when apending the vfstab to:

dev to mount======/dev/dsk/c0d0p1:1
device to fsck====== <blank>
mount pt=========/Data
FS Type==========pcfs
fsck pass=========-
mount at boot=====yes
mount options===== <blank>

My 'Data' partition is a fat32 on the first logical drive.

Below are the error messages:

default failed to mount /usr ( see 'svc -x' for details)

ERROR: svc:/system/filesytem/root: default failed to mount /usr (see 'svc -x' for details)

svc.startd[7]: scv: /system/filesystem/root:default:Method "/lib/svc/method/fs-root" failed with exit status 95
[system/filesystem/root:default failed fatally (see 'svc -x for details)]

Request system Maintenance mode
(see /lib/svc/share/README for more information)
Console login service(s) cannot run.

What is the workaround to the problem or undo what I did?
- fsck: line in vfstab has too few entries
- Unable to 'vi vfstab' too.
- have tried to follow the resolution from README above but its not resolved.
- I have serch the net, closest came from veritas website but the answer is too specific and I'm unable to amend to my needs.

Thank you in advance.