If any multiboot entries that support directly booting the unix kernel are encountered by GRUB, the following message is displayed:
multiboot is no longer used to boot the Solaris Operating System. The grub entry should be changed to: kernel$ /boot/$ISADIR/xen.gz module$ /platform/i86xpv/kernel/$ISADIR/unix /platform/i86xpv/kernel/$ISADIR/unix -B $ZFS-BOOTFS module$ /platform/i86pc/$ISADIR/boot_archive See http://www.sun.com/msg/SUNOS-8000-AK for details. Press any key to reboot.
If the preceding message is displayed, you will need to update the entries in the GRUB menu.lst manually to successfully boot the system. More information can be found at http://www.sun.com/msg/SUNOS-8000-AK and the boot(1M) man page. For further information and instructions, see x86: Error Messages Upon System Boot.