Re: Grub Manual

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Jonathan Dieter wrote:
> On Sat, 2007-10-20 at 12:00 -0500, Les Mikesell wrote:
>> Jonathan Dieter wrote:
> 
>>> The other thing you might try would be to use Rom-o-matic to generate an
>>> etherboot floppy image for your network card and write it to a small
>>> (~1MB) partition on your hard drive.  Then, in Grub do the whole
>>> rootnoverify(hd0,x), chainloader +1 and see how that works.  I haven't
>>> actually tried this method, but it seems that it should work.
>> Going this route, I'd rather not have to dedicate a partition.  Is there 
>> any way to put it in /boot along with a linux boot setup?
> 
Etherboot will produce bootable floppy images. I don't remember for
sure, but I believe it will also produce a Grub loadable image just
like  Memtest86 does. Chainloading to the floppy image should work,
but if it will produce a directly loadable file, that would be better.

> As far as I can tell, no.  Grub is able to grab files from a filesystem,
> but I don't think it can set its root device to be a file.
> 
The Grub root device is where the base of where it looks for the
file. According to the manual, you can use a file name in the
chanloader command, or specify where to read from, and how much to
read. So something like "chainloader boot.img" should work. I
believe there was a thread on this before where we were using a
floppy image designed to let you boot from a CD on systems where the
BIOS did not support it to give Grub a boot from CD option.

You may want to look at Grub network support. There is supposed to
be a PXE stage 2 image for Grub. You can then select the boot image
from the server. It did not say, but I suspect it will also let you
boot from the local drive.

Mikkel
-- 

  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!

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