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Full Discussion: Grub Issues ; Prominent.
Special Forums Hardware Boot Loaders Grub Issues ; Prominent. Post 302553082 by cjcox on Tuesday 6th of September 2011 04:32:52 PM
Old 09-06-2011
Well.. that's not true. You only need to chainload when you need to call up a different boot loader other than grub (e.g. a windows boot loader). So.. grub CAN boot OS's from the grub shell... and if needed it can transfer control to a foreign boot loader as needed.

I think maybe we need to know a LOT more about your setup before we can know what exactly is wrong.
 

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LEARN ABOUT CENTOS

grub2-bios-setup

GRUB-BIOS-SETUP(3)					     Library Functions Manual						GRUB-BIOS-SETUP(3)

NAME

       grub-bios-setup -- Set up images to boot from a device.

SYNOPSIS

       grub-bios-setup [-a | --allow-floppy] [-b | --boot-image=FILE]
			[-c | --core-image=FILE] [-d | --directory=DIR]
			[-f | --force] [-m | --device-map=FILE]
			[-s | --skip-fs-probe] [-v | --verbose] DEVICE

DESCRIPTION

       You should not normally run this program directly.  Use grub-install instead.

OPTIONS

       --allow-floppy
	      Make  the device also bootable as a floppy.  This option is the default for /dev/fdX devices.  Some BIOSes will not boot images cre-
	      ated with this option.

       --boot-image=FILE
	      Use FILE as the boot image.  The default value is boot.img.

       --core-image=FILE
	      Use FILE as ther core image.  The default value is core.img.

       --directory=DIR
	      Use GRUB files in the directory DIR.  The default value is /boot/grub.

       --force
	      Install even if problems are detected.

       --device-map=FILE
	      Use FILE as the device map.  The default value is /boot/grub/device.map .

       --skip-fs-probe
	      Do not probe DEVICE for filesystems.

       --verbose
	      Print verbose messages.

SEE ALSO

       info grub

								  Wed Feb 26 2014						GRUB-BIOS-SETUP(3)
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