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Re: Installing Debian with preseed file using qemu




	Hi.

On Wed, Nov 07, 2018 at 02:27:32PM +0100, john doe wrote:
> On 11/7/2018 7:26 AM, Reco wrote:
> > 	Hi.
> > 
> > On Tue, Nov 06, 2018 at 08:44:08PM +0100, john doe wrote:
> >> On 11/6/2018 5:05 PM, john doe wrote:
> >>> On 11/6/2018 4:02 PM, Reco wrote:
> >>>> 	Hi.
> >>>>
> >>>> On Tue, Nov 06, 2018 at 03:04:25PM +0100, john doe wrote:
> >>>>> Hi,
> >>>>>
> >>>>> I'm trying to install Debian Stretch using a preseeding file.
> >>>>> All of this is with Qemu and  I'm not sure how  to pass the path of the
> >>>>> preseed file:
> >>>>>
> >>>>> qemu-system-x86_64 -drive file=debian.img,format=raw -cdrom
> >>>>> debian-9.5.0-amd64-netinst.iso -boot d -nographic -kernel vmlinuz
> >>>>> -append "console=ttyS0,115200n8 auto=true priority=critical
> >>>>> DEBIAN_FRONTEND=text preseed=preseed.cfg" -initrd initrd.gz
> >>>>>
> >>>>> The d-i can not find the preseed.cfg file, as anyone has any idea on how
> >>>>> I can install Debian with a preseed file using qemu?
> >>>>
> >>>> Since you do not specify "-net", that means "-net user".
> >>>> As [1] shows us, "-net user" comes with built-in TFTP server.
> >>>>
> >>>> So, you either replace your "-kernel", "-initrd" and "-append" with TFTP
> >>>> invocation, and install Debian as if it was installed from TFTP.
> >>>> Or rebuild d-i initrd to include your preseed.cfg.
> >>>>
> >>>
> >>> Thank you, I didn't think to install debian using PXE with qemu acting
> >>> as tftp server.
> >>>
> >>
> >> Ok -- I have downloaded/extracted netboot.tar.gz and I use the following
> >> command:
> >>
> >> "qemu-system-x86_64" -drive file=debian.img,format=raw -m 8126 -accel
> >> hax   -machine q35 -boot n -device e1000,netdev=n1 -netdev
> >> user,id=n1,tftp=$PWD,bootfile=/pxelinux.0 -nographic
> >>
> >> I get the error "could not read the boot disk".
> >>
> >> Any thoughts on what I'm missing?
> > 
> > Both tcpdump and strace outputs? I know, I know ;)
> > 
> > This does not look right; "bootfile=/pxelinux.0".
> > You're assumed to have pxelinux binary, its libraries, pxelinux.cfg, etc
> > in the same directory, and to point QEMU there.
> > 
> 
> Taking care of the symlink I now get:
> 
>   [Link:up, TX:0 TXE:0 RX:0 RXE:0]
> Configuring (net0 52:54:00:12:34:56)..... ok
> net0: 10.0.2.15/255.255.255.0 gw 10.0.2.2
> Next server: 10.0.2.2
> Filename: /pxelinux.0
> tftp://10.0.2.2//pxelinux.0... ok
> pxelinux.0 : 80 bytes [PXE-NBP]
> 
> 
> Looks like the command is working, what I need to understand is how to
> configure Debian netbooting using pxe.
> So I guess my question is:
> 
> Other then netboot.gz (downloaded and extracted), what else do I need?

To follow this guide, for instance:

http://www.briancarpio.com/2012/04/04/system-automation-part-1/

There's no need to configure another TFTP server, QEMU takes care of it
already. But appropriate placing of syslinux binaries, configuration
files, etc - it's all there.

Reco