Re: qemu redirecting guest output in terminal
- Date: Fri, 26 Oct 2018 17:44:00 +0300
- From: Reco <recoverym4n@xxxxxxxxxxxx>
- Subject: Re: qemu redirecting guest output in terminal
On Fri, Oct 26, 2018 at 03:34:55PM +0200, john doe wrote:
> >> Run QEMU this way:
> >> qemu -hda debian.img -m 1024 -nographic \
> >> -kernel vmlinux -append 'console=ttyS0,115200n8' \
> >> -initrd initrd.gz
> >> Replace -kernel, -initrd and -append with '-boot c' after the
> >> installation.
> >> Also consider using '-M q35' instead of old '-M pc' you're using now.
> > Thanks to the help of "Dejan Jocic <jodejka@xxxxxxxxx>" and to this
> > answer I manage to get the output of the guest redirected in the
> > terminal by using the following command:
> > PS C:\qemu> clear; & 'C:\Program Files\qemu\qemu-system-x86_64.exe' -hda
> > debian.img -cdrom debian-9.5.0-amd64-netinst.iso -boot d -m 1024
> > -nographic -kernel vmlinuz -append 'console=ttyS0,115200n8
> > DEBIAN_FRONTEND=text priority=low' -initrd initrd.gz
> > As you can see it is done on Windows and when attempting to install
> > Debian the output is a bit mest up:
> > Choose the next step in the install process:
> > 1: Choose language [*],
> > 2: Access software for a blind person using a braille display,
> > 3: Configure the keyboard,
> > 4: Detect and mount CD-ROM,
> > 5: Load installer components from CD,
> > 6: Change debconf priority,
> > 7: Check the CD-ROM(s) integrity,
> > 8: Save debug logs,
> > 9: Execute a shell,
> > 10: Abort the installation,
> > Prompt: '?' for help, default=1> 1
> > Select a language
> > -----------------
> > Choose the language to be used for the installation process. The selected
> > language will also be the default language for the installed system.
> > Language:
> > ←[22A←[M←[22BPrompt: '?' for help, default=2> ←
> > Looks like it is character encoding related.
> > I understand that it is Windows/powershell but if anyone has a hint,
> > that would be awesome! :)
Nah, we don't do Windows here. Way too many quirks for my personal
What you can try is to replace stdio with telnet:
qemu -hda debian.img -m 1024 \
-chardev socket,id=tty0,port=5555,server,telnet \
-serial chardev:tty0 -nographic \
-kernel vmlinux -append 'console=ttyS0,115200n8' \
Port 5555 is just an example, obviously.
And you'll need telnet, but since you're using Cygwin you should got it
> > Note that this e-mail is folded by my mailer.
Meaning that I use 'format=flowed'? It's recommended to wrap lines at 72
characters here anyway.
> Using Cygwin the output is not mest up but during the installation I'm
> stuck at:
> "No disk drive was detected. If you know the name of the driver needed
> by your
> disk drive, you can select it from the list.
> Driver needed for your disk drive:
> 1: continue with no disk drive [*], 46: loop,"
> Should I select the default option (1) or what should I do?
No, that means that whatever you did with Cygwin denied QEMU read-write
access to a file that represents a disk drive. An installation is