Beginner Q on OS Dev

[Sysem]

Ok, first of all, excuse the really inexperienced post. My knowledge here is a little shakey - I work with normal desktop programming and embedded systems (which I guess is similar, but I'm having troubles )

Anyway, I followed the Bare Bones tutorial, and understand it. Sort of. It works (tested on Qemu and loading the .img file to a usb and booting from that). However, in the tutorial, they use GRUB as a bootloader and I have to manually enter the commands "kernel 200+18" and "boot" when GRUB boots. Now this was great for testing and playing around, but its not very practical.

So basically I'm looking for a way to skip (or automate?) those commands so it goes straight to booting my very simple Hello World kernel. I'd like to stick with GRUB as a bootloader, just because writing one has proved to be more challenging than I'd like to admit.

So whats the best approach on doing this? I searched around and found articles on grub.cfg and menu.lst? But in the Bare Bones tutorial, the only GRUB files used are stage1 and stage2.

Thanks,
Sysem

[brain]

Yes you can do this. Google around for the grub 1.97 pre built that you can find in many hobby oses - this will do what you need, but remember to install it onto a proper filesystem image of course, fat32 or iso9660 will do fine.

Mine is here with stage 1_5 for iso9660 cd:

http://brainbox.cc/repository/trunk/six ... boot/grub/

[Sysem]

Yes you can do this. Google around for the grub 1.97 pre built that you can find in many hobby oses - this will do what you need, but remember to install it onto a proper filesystem image of course, fat32 or iso9660 will do fine.

Mine is here with stage 1_5 for iso9660 cd:

http://brainbox.cc/repository/trunk/six ... boot/grub/

Thanks.

Now the 2nd part is installing it to the floppy image? do I just cat those stage1, stage2, menu.lst, iso9660 and my kernel to a new file "floppy.img"?

Sorry, I know this seems trivial but for some reason I'm struggling more with the img creation and not that OS dev part...

Sysem

[brain]

Those are for cd Rom iso image - browse around my repository for how to embed this with genisoimage or mkisofs in linux. personally I find floppies very limiting and avoid them...

[Sysem]

Those are for cd Rom iso image - browse around my repository for how to embed this with genisoimage or mkisofs in linux. personally I find floppies very limiting and avoid them...

Ok I made a iso file instead (following these tutorials: http://wiki.osdev.org/Mkisofs and http://wiki.osdev.org/Bootable_CD) and it boots. But instead of booting my kernel or the grub menu, it says:

Booting from DVD/CD...
0MB medium found
GRUB

[brain]

Hmm, I never followed any tutorial for it, I just dumped the grub files into /boot/grub, set up the menu.lst and then created a no-emulation el-torito cdrom iso... does that way work for you? Make sure you don't use grub 2.x as its a little more difficult to get working imho.

Edit: those tuts are for emulation mode. this is more what you need: http://wiki.osdev.org/Bootable_El-Torit ... RUB_Legacy

[Sysem]

Hmm, I never followed any tutorial for it, I just dumped the grub files into /boot/grub, set up the menu.lst and then created a no-emulation el-torito cdrom iso... does that way work for you? Make sure you don't use grub 2.x as its a little more difficult to get working imho.

Edit: those tuts are for emulation mode. this is more what you need: http://wiki.osdev.org/Bootable_El-Torit ... RUB_Legacy

You, sir, have made my day! No I can focus more on the development of my kernel! Thanks a million!



Sysem