syslinux - nx.beandog.org

====== syslinux ======

  * [[https://wiki.archlinux.org/index.php/Syslinux|Arch Linux: Syslinux]]

==== EXTLINUX GPT Installation ====

Before anything, you will need to use ''gdisk'' to edit a partition and set a legacy MBR bootflag for it.  The option is available in the expert list of options in the gdisk menu.

Writing the changes to the MBR will not delete your partitions.

<code>
gdisk /dev/sda
</code>

Install the new GPT bootloader:

<code>
dd bs=440 conv=notrunc count=1 if=/usr/share/syslinux/gptmbr.bin of=/dev/sda
</code>

<code>
cd /usr/share/syslinux/
cp chain.c32 ldlinux.c32 libcom32.c32 libutil.c32 linux.c32 memdisk menu.c32 vesamenu.c32 reboot.c32 poweroff.c32 rosh.c32 /boot/extlinux/
</code>

Create a configuration file, and install EXTLINUX.

This file sets the timeout to 60 seconds.

<code>
TIMEOUT 600
ONTIMEOUT vmlinuz-3.12.21-gentoo-r1

UI vesamenu.c32
MENU TITLE Boot

LABEL vmlinuz-3.12.21-gentoo-r1
        MENU LABEL Gentoo Linux 3.12.21-gentoo-r1
        LINUX /boot/vmlinuz-3.12.21-gentoo-r1
        APPEND root=/dev/sda1

LABEL vmlinuz-3.10.17-gentoo
        MENU LABEL Gentoo Linux 3.10.17-gentoo
        LINUX /boot/vmlinuz-3.10.17-gentoo
        APPEND root=/dev/sda1
</code>

<code>
extlinux --install /boot/extlinux/
</code>

Here's an example of a longer ''extlinux.conf'', with version 6.00 and above:

<code>
TIMEOUT 100
ONTIMEOUT gentoo-3.14.24-ck

UI menu.c32
MENU TITLE Boot

LABEL gentoo-3.14.24-ck
	MENU LABEL Gentoo Linux 3.14.24-ck
	LINUX /boot/vmlinuz-3.14.24-ck root=/dev/sda1 quiet

LABEL gentoo-ck2
	MENU LABEL Gentoo Linux 3.14.4-ck (quiet)
	LINUX /boot/vmlinuz-3.14.4-ck root=/dev/sda1 quiet

LABEL gentoo-ck2-quiet
	MENU LABEL Gentoo Linux 3.14.4-ck
	LINUX /boot/vmlinuz-3.14.4-ck root=/dev/sda1

LABEL windows7
	MENU LABEL Windows 7
	COM32 chain.c32
	# APPEND hd1 2
	APPEND mbr:1FF400E3-1632-43B4-BDEA-FC2D558E23F0

LABEL reboot
	MENU LABEL Reboot
	COM32 reboot.c32

LABEL poweroff
	MENU LABEL Power off
	COM32 poweroff.c32

LABEL rosh
	MENU LABEL Read-only shell
	COM32 rosh.c32
</code>
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