How to restore the extlinux boot loader

When you install another OS you may lose your ability to boot into Foresight Linux because the extlinux bootloader was replaced.

You can re-install the bootloader by using an installation CD/DVD, on the boot screen type:

linux rescue

Please make sure you select the attempt to mount partition option.

<The following is copied from GrubToSyslinuxMigration

Check that the size of the new syslinux/extlinux MBR (/usr/share/syslinux/mbr.bin) is < 440 bytes in size. If it is any larger, it is corrupt and installing it will hose your partition table. You have been warned.

(In the instructions below, the primary boot disk is assumed to be /dev/sda)

[ermo@gizmo ~]$ ls -l /usr/share/syslinux/mbr.bin
-rw-r--r-- 1 root root 410 2007-11-20 22:03 /usr/share/syslinux/mbr.bin
[ermo@gizmo etc]$ sudo su -
Password:
[root@gizmo ~]# cat /usr/share/syslinux/mbr.bin > /dev/sda

[root@gizmo ~]# extlinux --install /boot/extlinux