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.TH INSTALLGRUB 1M "Jan 14, 2015"
.SH NAME
installgrub \- install GRUB in a disk partition or a floppy
.SH SYNOPSIS
.LP
.nf
\fB/sbin/installgrub\fR [\fB-fm\fR] \fIstage1\fR \fIstage2\fR \fIraw-device\fR
.fi

.SH DESCRIPTION
.LP
The \fBinstallgrub\fR command is an x86-only program. GRUB stands for GRand
Unified Bootloader.
.sp
.LP
\fBinstallgrub\fR installs GRUB stage 1 and stage 2 files on the boot area of a
disk partition. If you specify the \fB-m\fR option, \fBinstallgrub\fR installs
the stage 1 file on the master boot sector of the disk.
.SH OPTIONS
.LP
The \fBinstallgrub\fR command accepts the following options:
.sp
.ne 2
.na
\fB\fB-f\fR\fR
.ad
.RS 6n
Suppresses interaction when overwriting the master boot sector.
.RE

.sp
.ne 2
.na
\fB\fB-m\fR\fR
.ad
.RS 6n
Installs GRUB \fIstage1\fR on the master boot sector interactively. You must
use this option if Solaris is installed on an extended FDISK or an EFI/GPT
partition.
.RE

.SH OPERANDS
.LP
The \fBinstallgrub\fR command accepts the following operands:
.sp
.ne 2
.na
\fB\fIstage1\fR\fR
.ad
.RS 14n
The name of the GRUB stage 1 file.
.RE

.sp
.ne 2
.na
\fB\fIstage2\fR\fR
.ad
.RS 14n
The name of the GRUB stage 2 file.
.RE

.sp
.ne 2
.na
\fB\fIraw-device\fR\fR
.ad
.RS 14n
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 \fB/dev/rdiskette\fR.
.RE

.SH EXAMPLES
.LP
\fBExample 1 \fRInstalling GRUB on a Hard Disk Slice
.sp
.LP
The following command installs GRUB on a system where the root slice is
\fBc0d0s0\fR:

.sp
.in +2
.nf
example# /sbin/installgrub /boot/grub/stage1 \e
         /boot/grub/stage2 /dev/rdsk/c0d0s0
.fi
.in -2

.LP
\fBExample 2 \fRInstalling GRUB on a Floppy
.sp
.LP
The following command installs GRUB on a formatted floppy:

.sp
.in +2
.nf
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
.fi
.in -2

.SH FILES
.ne 2
.na
\fB\fB/boot/grub\fR\fR
.ad
.RS 14n
Directory where GRUB files reside.
.RE

.SH ATTRIBUTES
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
box;
c | c
l | l .
ATTRIBUTE TYPE	ATTRIBUTE VALUE
_
Interface Stability	Uncommitted
.TE

.SH SEE ALSO
.LP
\fBboot\fR(1M), \fBfdisk\fR(1M), \fBfmthard\fR(1M), \fBkernel\fR(1M),
\fBattributes\fR(5)
.SH WARNINGS
.LP
Installing GRUB on the master boot sector (\fB-m\fR option) overrides any boot
manager currently installed on the machine. The system will always boot the
GRUB in the Solaris partition regardless of which \fBfdisk\fR partition is
active.