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[Qemu-discuss] Problem booting 32 bit guest on 64 bit host using kvm

From: Mark Blakeney
Subject: [Qemu-discuss] Problem booting 32 bit guest on 64 bit host using kvm
Date: Sun, 30 Dec 2012 12:13:03 +1000

Hi, I am inexperienced using QEMU and hoping somebody here can help me.

Some time ago I cloned a disk image of an old Solaris legacy system I work on and was able to successfully boot and use it within QEMU. Recently I upgraded my host from 32 bit Ubuntu 12.04 to a new box running Ubuntu 12.10 x86_64. Now I find that the qemu command results in that guest failing to boot from the MBR. The emulated PC just reports "no active boot partition".

The command I have been using is:

qemu-system-i386 \
  -machine pc,accel=kvm \
  -m 256M \
  -vga std \
  -net nic,vlan=1,model=pcnet \
  -net user,vlan=1,hostfwd=::8050-$GUEST:22 \
  -hda "$DISK"

I find that if I change to "accel=tcg" in above command then the guest will boot ok but I find my host works much harder & slower than when I use kvm. Is there a qemu option so I can use kvm but get around this guest boot issue?



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