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grub(5) [opensolaris man page]

grub(5) 						Standards, Environments, and Macros						   grub(5)

grub - GRand Unified Bootloader software on Solaris DESCRIPTION
The current release of the Solaris operating system is shipped with the GRUB (GRand Unified Bootloader) software. GRUB is developed and supported by the Free Software Foundation. The overview for the GRUB Manual, accessible at, describes GRUB: Briefly, a boot loader is the first software program that runs when a computer starts. It is responsible for loading and transferring con- trol to an operating system kernel software (such as Linux or GNU Mach). The kernel, in turn, initializes the rest of the operating system (for example, a GNU [Ed. note: or Solaris] system). GNU GRUB is a very powerful boot loader that can load a wide variety of free, as well as proprietary, operating systems, by means of chain- loading. GRUB is designed to address the complexity of booting a personal computer; both the program and this manual are tightly bound to that computer platform, although porting to other platforms may be addressed in the future. [Ed. note: Sun has ported GRUB to the Solaris operating system.] One of the important features in GRUB is flexibility; GRUB understands filesystems and kernel executable formats, so you can load an arbi- trary operating system the way you like, without recording the physical position of your kernel on the disk. Thus you can load the kernel just by specifying its file name and the drive and partition where the kernel resides. Among Solaris machines, GRUB is supported on x86 platforms. The GRUB software that is shipped with Solaris adds two utilities not present in the open-source distribution: bootadm(1M) Enables you to manage the boot archive and make changes to the GRUB menu. installgrub(1M) Loads the boot program from disk. Both of these utilities are described in Solaris man pages. Beyond these two Solaris-specific utilities, the GRUB software is described in the GRUB manual, a PDF version of which is available from the Sun web site. Available in the same location is the grub(8) open-source man page. This man page describes the GRUB shell. SEE ALSO
boot(1M), bootadm(1M), installgrub(1M) Solaris Express Installation Guide: Basic Installations System Administration Guide: Basic Administration SunOS 5.11 21 Apr 2005 grub(5)

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installgrub(1M)                                                                                                                    installgrub(1M)

installgrub - install GRUB in a disk partition or a floppy SYNOPSIS
/sbin/installgrub [-fm] stage1 stage2 raw-device The installgrub command is an -only program. GRUB stands for GRand Unified Bootloader. installgrub installs GRUB stage 1 and stage 2 files on the boot area of a disk partition. If you specify the -m option, installgrub installs the stage 1 file on the master boot sector of the disk. The installgrub command accepts the following options: -f Suppresses interaction when overwriting the master boot sector. -m Installs GRUB stage1 on the master boot sector interactively. The installgrub command accepts the following operands: stage1 The name of the GRUB stage 1 file. stage2 The name of the GRUB stage 2 file. raw-device The name of the device onto which GRUB code is to be installed. It must be a character device that is readable and writable. For disk devices, specify the slice where the GRUB menu file is located. (For Solaris it is the root slice.) For a floppy disk, it is /dev/rdiskette. Example 1: Installing GRUB on a Hard Disk Slice The following command installs GRUB on a system where the root slice is c0d0s0: example# /sbin/installgrub /boot/grub/stage1 /boot/grub/stage2 /dev/rdsk/c0d0s0 Example 2: Installing GRUB on a Floppy The following command installs GRUB on a formatted floppy: example# mount -F pcfs /dev/diskette /mnt # mkdir -p /mnt/boot/grub # cp /boot/grub/* /mnt/boot/grub # umount /mnt # cd /boot/grub # /sbin/installgrub stage1 stage2 /dev/rdiskette /boot/grub Directory where GRUB files reside. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ boot(1M), fdisk(1M), fmthard(1M), kernel(1M), attributes(5) Installing GRUB on the master boot sector (-m option) overrides any boot manager currently installed on the machine. The system will always boot the GRUB in the Solaris partition regardless of which fdisk partition is active. 24 May 2005 installgrub(1M)

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