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Re: Cloop-Driver, was Re: [Qemu-devel] QEMU with KNOPPIX

From: Fabrice Bellard
Subject: Re: Cloop-Driver, was Re: [Qemu-devel] QEMU with KNOPPIX
Date: Sat, 28 Aug 2004 00:32:27 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030624

I'll merge your cloop patch ASAP.


Johannes Schindelin wrote:

On Fri, 27 Aug 2004, Johannes Schindelin wrote:

On Fri, 27 Aug 2004, Piotr Krysik wrote:

It can work in Windows, if you implement support
of cloop-compatible image format in Qemu executable.

Just look at qcow compressed image format. Qemu
doesn't require any additional services from host
OS. The decompression is implemented by Qemu and
is transparent for guest.

Hint: for space reasons, the cloop image is an ISO9660 formatted Linux
system, so you probably have to have an ISO9660 enabled (not module)
kernel, and you probably have to specify the kernel separately via
"-kernel", as the cloop image (at least to my knowledge) does not contain
a valid boot loader.

Okay, so I hacked together a driver which is able to read at least the
newest Knoppix image (from 3.6EN).

Only problem: When you start it with

qemu -hda /cdrom/KNOPPIX/KNOPPIX \
  -kernel /cdrom/boot/isolinux/linux24 \
  -initrd /cdrom/boot/isolinux/minirt24.gz \
  -append root=/dev/hda

Knoppix believes it runs from the HD (installed version) and does not
recreate /etc/fstab, and then just stops.

Any Knoppix hackers out there? Maybe one can trick Knoppix into recreating
all these files nontheless?



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