System Administration Guide: Basic Administration

x86: Diskless Client Changes in the GRUB Boot Environment

An extension has been made to GRUB to enable kernel$, module$, and $ISADIR usage in the menu.lst file.

The bootadm command installs a default boot entry in the menu.lst file that is similar to the following:

kernel$ /platform/i86pc/kernel/$ISADIR/unix
module$ /platform/i86pc/kernel/$ISADIR/unix /platform/i86pc/kernel/$ISADIR/unix -B $ZFS-ROOTFS
module$ /platform/i86pc/$ISADIR/boot_archive

The kernel$ and module$ keywords are identical to the kernel and module commands that are used in the GRUB multiboot implementation. The $ISADIR keyword has the added capability to expand to amd64 on 64-bit capable hardware. If the x86 based system is not 64-bit capable, the $ISADIR keyword is a null value (""). In this instance, the system boots the 32-bit kernel.

Note –

These changes do not prevent you from booting of a newer Solaris kernel with an older implementation of GRUB. Nor do the changes prevent you from booting of an older Solaris kernel with a newer implementation of GRUB.

Note –

GRUB based booting is not available on SPARC based systems.

The following feature enhancements are part of the new diskless boot scheme: