[OpenIndiana-discuss] Hard shutdown now no boot

[Jason Matthews]

if you think the cmos battery is bad then the sata config might have 
reverted to legacy mode or compatibility mode from ahci (or vice versa). 
this might account seeing grub but not file systems. this needs to be 
addressed before proceeding.

they kernel line you are looking for should look like this:
kernel$ /platform/i86pc/kernel/$ISADIR/unix -B $ZFS-BOOTFS,console=text -v

also, remove any lines that look like this:
splashimage /boot/grub/splash.xpm.gz
foreground 343434
background F7FbFF


that should get you on your way to finding out what is going wrong