OSDev.org

Posted: **Fri Dec 12, 2014 2:15 pm**

I'm trying to boot the myos.iso from Bare Bones tutorial using qemu:

qemu-system-i386 -cdrom myos.iso

However the system doesn't boot. When trying to boot from CDROM it says:

Booting from DVD/CD...
Boot failed: Could not read from CDROM (code 0009)

I created the iso with grub-mkrescue following the tutorial:

Code: Select all

mkdir -p isodir
mkdir -p isodir/boot
cp myos.bin isodir/boot/myos.bin
mkdir -p isodir/boot/grub
cp grub.cfg isodir/boot/grub/grub.cfg
grub-mkrescue -o myos.iso isodir

Grub version installed on my system is:

Code: Select all

grub-install --version 
grub-install.real (GRUB) 2.02~beta2-9ubuntu1

Moreover the kernel boots fine with:

Code: Select all

qemu-system-i386 -kernel myos.bin

Where could the problem be?

Posted: **Fri Dec 12, 2014 2:17 pm**

And then how did you create the CD from the ISO image?

Posted: **Fri Dec 12, 2014 2:20 pm**

iansjack wrote:And then how did you create the CD from the ISO image?

I did not create a CD. I'm using the iso as cdrom image for qemu:

Code: Select all

qemu-system-i386 -cdrom myos.iso

Posted: **Sun Dec 14, 2014 4:55 am**

To update, I think the problem resides in grub-mkrescue, since it shows also with the Meaty Skeleton tutorial, where I run the os in qemu with the automated script.
Any advice?

Posted: **Sun Dec 14, 2014 11:51 am**

Do you have the 'grub-pc' package installed? There have been reports of issues with running grub-mkrescue on EFI systems that don't by default install the PC-BIOS version of grub.

Regards,
John.

edit: following a quick test with an EFI version of ubuntu 14.10, it appears you need the 'grub-pc-bin' package installed for grub-mkrescue to make a hybrid ISO. Obviously this is only your problem if you are using EFI ubuntu.

OSDev.org

Cannot boot iso from Bare Bones tutorial

Cannot boot iso from Bare Bones tutorial

Re: Cannot boot iso from Bare Bones tutorial

Re: Cannot boot iso from Bare Bones tutorial

Re: Cannot boot iso from Bare Bones tutorial

Re: Cannot boot iso from Bare Bones tutorial