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Re: [PATCH] Create floppy emulation boot CD with grub-mkimage
From: |
Christian Franke |
Subject: |
Re: [PATCH] Create floppy emulation boot CD with grub-mkimage |
Date: |
Fri, 08 Feb 2008 23:03:07 +0100 |
User-agent: |
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.11) Gecko/20071128 SeaMonkey/1.1.7 |
Robert Millan wrote:
On Fri, Feb 08, 2008 at 07:45:48PM +0100, Christian Franke wrote:
A CD created by "grub-mkrescue --image-type=cdrom" does not work for me
for some reason.
This is AFAIK the most widely used method for CD boot. Do other CDs work for
you?
Yes, all of my boot CDs work :-)
Meantime, I found the problem: cdboot.img was > 512 bytes. I forgot to
add the ld script necessary for the Cygwin build (-N does not work).
Should have checked this first, sorry.
Now the CD boots, but the result is interesting:
Real PC: escape to rescue mode, root=hd31, no (cd0) device, no modules.
VMWare: same.
VirtualPC: escape to rescue mode, root=cd15, (cd0) exists, normal mode
can be started manually.
VirtualBox: Works as expected.
Both floppy and "floppy(on)cd" both work as expected.
If this is a bug, I think it's better to fix it instead of adding workarounds.
Yes, but the patch provides the end-user with a simple way to create a
fall back boot CD when the normal boot CD does not work for whatever
reason. And the patch does not break anything existing.
Christian