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[Qemu-devel] booting from /dev/hd?
From: |
Tim |
Subject: |
[Qemu-devel] booting from /dev/hd? |
Date: |
Mon, 31 May 2004 10:10:05 -0700 |
User-agent: |
Mutt/1.5.6i |
Hello,
I know it is considered dangerous, but I am willing to accept the
risk... Has anyone been able to boot a virtual machine from their main
boot drive while the drive is in use?
More specifically, I have a dual boot system, win2k/debian, and I would
like to try booting windoze from this disk as a guest OS while running
the linux system from this same disk. In order to protect my disk from
erroneous writes, I planned on running the vm system with -snapshot.
I have tried this, and with basic options:
qemu -hda /dev/hda -snapshot -boot c
my bootloader (grub) comes up just fine, but once I select win2k, it
reports a disk read error. When booting Debian, it loads the kernel and
tries to begin booting, but just hangs. This may be because my kernel
is customized for my Athlon though...
I figured the windoze issue might be a geometry problem, so I ran
`fdisk -l /dev/hda' and then used that geometry:
qemu -hda /dev/hda -snapshot -boot c -hdachs 4865,255,63
and I get the same results. Perhaps I need to use a non-LBA geometry or
something? I really don't know much about disk geometry, just a
guess...
Has anyone tried doing something similar to what I am attempting? If
so, did you have any success, and what did you try that I haven't? I am
pretty sure I have permissions right in the host OS, is there anything I
am forgetting?
thanks,
tim
- [Qemu-devel] booting from /dev/hd?,
Tim <=