Re: TFPT boot without PXE

[Andrei Borzenkov]

В Sun, 26 Jul 2015 00:14:48 +0200
Christian Meyer <address@hidden> пишет:

> Hello there,
> 
> is there a way to locally start grub (via hd, CD or USB) and let it boot
> a GNU/Linux system over the network only using TFTP (with given
> servername or IP adress) but without using PXE?
> 

GRUB is using networking facilities provided by firmware so it depends
on platform. On UEFI networking is always available so it is possible.
On legacy BIOS (i.e. i386-pc) PXE stack is present only when booted
over PXE, so it is not possible. 

> Background: I'm running a windows active directory with an active PXE
> booting environment to deploy windows on the network. For security
> reasons I'm not allowed to modify the server or the boot config.
> 
> So I installed a Debian TFTP and NFS server on a seperate machine using
> the windows AD as the DHCP and DNS server. Windows server "knows" this
> computer but of course does not know it as a DHCP "next-server".
> 
> I now want to configure local grub not to boot Windows PXE but the Linux
> kernel and initrd (and later NFSROOT) from my Linux server using its DNS
> name or IP adress.
> 
> Christian
> 
> 
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