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[bug #63498] net_bootp error: no network card found

From: George Harig
Subject: [bug #63498] net_bootp error: no network card found
Date: Fri, 9 Dec 2022 19:02:01 -0500 (EST)


                 Summary: net_bootp error: no network card found
                 Project: GNU GRUB
               Submitter: gharig
               Submitted: Sat 10 Dec 2022 12:01:59 AM UTC
                Category: Booting
                Severity: Major
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: George Harig
        Originator Email: gharig@comcast.net
             Open/Closed: Open
                 Release: other
         Discussion Lock: Any
         Reproducibility: Every Time
         Planned Release: None


Follow-up Comments:

Date: Sat 10 Dec 2022 12:01:59 AM UTC By: George Harig <gharig>
Hi All,

So I have a winsystem C407 PC104 machine, a Hard drive with 3 prtitions on it,
#1 is linux etx4, #2 is linux swap and #3 is vFat UEFI (with Grub on it), I
also have a USB drive that is set up to UEFI boot, both UEFI drives (hard
drive and usb) have GRUB2 version 2.06. I used grub-install to generate the
EFI/BOOT files using Tinycore PureCore64, which is a linux 64bit distro.

So first, from what I can tell, the Grub boot loader works, and it works
great, on both the hard drive and USB. I can not complain, Tinycore 64 is the
OS that gets loaded every time.

However, when I am at the GRUB prompt and enter the command net_bootp I get
the error: no network cards found.  I have in my grub.cfg to load the
following modules using insmod: net, efinet, tftp, http and a few others. I
have also manually loaded the modules.  

>From what I have read, I have the idea that I should be able to access a tftp
or http server from the grub command line.  Which would be totally awesome.
And would solve a lot of issues for me if it does in fact work the way I think
it should.

My goal is to let GRUB2 handle the remote booting, verses having the BIOS
handle the PXE booting.

When I run the command net_ls_cards at the Grub prompt, no cards are

The network card dose work, I know this because I am able to PXE netboot from
the machine.

The hardware I'm using is Winsystem C407 PC104 card
E3825 2 core, 1.33 GHz
IntelĀ® i210 Gigabit Ethernet port (1 gigabit per second, GbE) serial ports
24 Digital I/O channels

Any help is appreciated



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