OSDev.org :: View topic - Create ISO image with GRUB2

grub-mkimage -p /boot -o tmp/core.img -O i386-pc biosdisk iso9660 multiboot configfile
cat /usr/lib/grub/i386-pc/cdboot.img tmp/core.img > eltorito.img

set timeout=15
set default=0

menuentry "LukOS"
{
multiboot /boot/LukOS.elf
boot
}

error: "prefix" is not set.
error: no menuentry definition.
error: syntax error.
error: Incorrect command.
error: syntax error.

$ grub-mkimage --version
grub-mkimage (GRUB) 1.99-6

grub-mkrescue -o velkos.iso runimage/

runimage/boot/grub/grub.cfg
runimage/boot/kernel.bin

set default=0
set timeout=0

menuentry "VelkOS" {
set root='(hd96)'
multiboot /boot/kernel.bin
}

error: unknown filesystem.
Entering rescue mode...

grub-mkimage -p /boot -o tmp/core.img -O i386-pc biosdisk iso9660 multiboot configfile sh
cat /usr/lib/grub/i386-pc/cdboot.img tmp/core.img > eltorito.img

$ grub-mkimage -p /boot -o tmp/core.img -O i386-pc biosdisk iso9660 multiboot configfile sh
grub-mkimage: error: cannot stat /usr/lib/grub/i386-pc/sh.mod.

bootcd:
@echo Creating bootable CD image...
@grub-mkimage --format=i386-pc --prefix="(cd)" --output=bin/core.img \
   --config="boot/default.cfg" loadenv biosdisk part_msdos part_gpt fat ntfs \
   ext2 ntfscomp iso9660 loopback search linux boot minicmd cat cpuid chain \
   halt help ls reboot echo test configfile normal sleep memdisk tar font \
   gfxterm gettext true vbe vga video_bochs video_cirrus multiboot multiboot2
@cat /usr/lib/grub/i386-pc/cdboot.img bin/core.img > bin/grub.img
@genisoimage -graft-points -input-charset utf8 -A "Label" -quiet -R -b \
   boot/grub/grub.img -no-emul-boot -boot-load-size 4 -boot-info-table \
   -o bootcd.iso \
   boot/kernel=bin/kernel \
   boot/grub/grub.cfg=boot/grub.cfg \
   boot/grub/grub.img=bin/grub.img

grub-mkrescue -o bootable.iso iso/

iso/
boot/
grub/
grub.cfg
kernel.bin

set default=0
set timeout=0

menuentry "OS" {
multiboot /boot/kernel.bin
boot
}

Author:	lukasz1235 [ Wed Jun 22, 2011 6:34 am ]
Post subject:	Create ISO image with GRUB2
Hi! I'm trying to create an iso image with GRUB2. I use these commands: Code: grub-mkimage -p /boot -o tmp/core.img -O i386-pc biosdisk iso9660 multiboot configfile cat /usr/lib/grub/i386-pc/cdboot.img tmp/core.img > eltorito.img My /boot/grub.cfg: Code: set timeout=15 set default=0 menuentry "LukOS" { multiboot /boot/LukOS.elf boot } And GRUB2 write: Code: error: "prefix" is not set. error: no menuentry definition. error: syntax error. error: Incorrect command. error: syntax error. How to create a bootable iso image with grub2? PS. Code: $ grub-mkimage --version grub-mkimage (GRUB) 1.99-6

Author:	Velko [ Wed Jun 22, 2011 9:06 am ]
Post subject:	Re: Create ISO image with GRUB2
I think, easiest way is to use GRUB2's grub-mkrescue utility: Code: grub-mkrescue -o velkos.iso runimage/ Contents of runimage/ directory: Code: runimage/boot/grub/grub.cfg runimage/boot/kernel.bin Contents of grub.cfg: Code: set default=0 set timeout=0 menuentry "VelkOS" { set root='(hd96)' multiboot /boot/kernel.bin }

Author:	lukasz1235 [ Wed Jun 22, 2011 10:04 am ]
Post subject:	Re: Create ISO image with GRUB2
Thanks. On qemu is probably OK, but on bochs, grub print: Code: error: unknown filesystem. Entering rescue mode...

Author:	xenos [ Wed Jun 22, 2011 1:23 pm ]
Post subject:	Re: Create ISO image with GRUB2
lukasz1235 wrote: Hi! I'm trying to create an iso image with GRUB2. I use these commands: I think you need to include the sh module to enable parsing of the config file: Code: grub-mkimage -p /boot -o tmp/core.img -O i386-pc biosdisk iso9660 multiboot configfile sh cat /usr/lib/grub/i386-pc/cdboot.img tmp/core.img > eltorito.img See GRUB2.

Author:	lukasz1235 [ Thu Jun 23, 2011 5:17 am ]
Post subject:	Re: Create ISO image with GRUB2
Code: $ grub-mkimage -p /boot -o tmp/core.img -O i386-pc biosdisk iso9660 multiboot configfile sh grub-mkimage: error: cannot stat /usr/lib/grub/i386-pc/sh.mod. From GRUB changelog: Quote: * util/grub-mkrescue.in (make_image): Remove sh module, which has been merged back into normal.

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Create ISO image with GRUB2 https://forum.osdev.org/viewtopic.php?f=1&t=23766	Page 1 of 1

Author:	dschatz [ Mon Dec 26, 2011 11:44 am ]
Post subject:	Re: Create ISO image with GRUB2
How was this resolved? I'm having the same trouble making a grub 2 boot iso following the wiki.

Author:	lukasz1235 [ Mon Dec 26, 2011 12:00 pm ]
Post subject:	Re: Create ISO image with GRUB2
I wrote own bootloader

Author:	StephanvanSchaik [ Tue Dec 27, 2011 9:24 am ]
Post subject:	Re: Create ISO image with GRUB2
Hi, For those who want to create an ISO image containing GRUB 2, you might attempt to use the following commands as listed in one of my Makefiles: Code: bootcd: @echo Creating bootable CD image... @grub-mkimage --format=i386-pc --prefix="(cd)" --output=bin/core.img \ --config="boot/default.cfg" loadenv biosdisk part_msdos part_gpt fat ntfs \ ext2 ntfscomp iso9660 loopback search linux boot minicmd cat cpuid chain \ halt help ls reboot echo test configfile normal sleep memdisk tar font \ gfxterm gettext true vbe vga video_bochs video_cirrus multiboot multiboot2 @cat /usr/lib/grub/i386-pc/cdboot.img bin/core.img > bin/grub.img @genisoimage -graft-points -input-charset utf8 -A "Label" -quiet -R -b \ boot/grub/grub.img -no-emul-boot -boot-load-size 4 -boot-info-table \ -o bootcd.iso \ boot/kernel=bin/kernel \ boot/grub/grub.cfg=boot/grub.cfg \ boot/grub/grub.img=bin/grub.img You might check out the OSDev wiki to figure out how most of these commands work. The rest should be pretty self-explanatory. Yours faithfully, S.J.R. van Schaik.

Author:	dschatz [ Thu Dec 29, 2011 1:49 pm ]
Post subject:	Re: Create ISO image with GRUB2
I was able to get a bootable grub 2 disc on the latest ubuntu server by doing the following: Code: grub-mkrescue -o bootable.iso iso/ iso directory structure: Code: iso/ boot/ grub/ grub.cfg kernel.bin grub.cfg: Code: set default=0 set timeout=0 menuentry "OS" { multiboot /boot/kernel.bin boot }

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