[Qemu-devel] problem with qemu-img to create boot disk

[Qemu-devel] problem with qemu-img to create boot disk

[kaiven long]

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Hi,folks
     I am using QEMU to debug Linux Kernel. And a boot disk is create
through qemu-img. It can cannot be booted with other built kernel. The
process is as the following show:
    create disk image like this:
           qemu-img create -f raw rootdisk.img 8G
    install redhat EL4 U4:
           qemu -boot d -cdrom rhel4u4-disc1.img -hda rootdisk.img
    during installation:
           /dev/hda1 ---> /boot ext2
           /dev/hda2 ----->/       ext2
           /dev/hda3------>    swap
    after the installation, file rootdisk.img, it shows:
           rootdisk.img:      x86 boot sector, code offset 0x48
     it can work like this:
           qemu rootdisk.img
     enter the system:fdisk -l, it shows that
         Partition table entries are not in disk order

     it also panics with other new built kernel like:
      qemu -kernel bzImage -hda rootdisk.img
     but the same kernel can work with the disk image down from qemu's
website:
      qemu -kernel bzImage -hda linux-0.2.img
      The only difference between rootdisk.img and linux-0.2.img is their
file atrributes as the following:
       rootdisk.img:      x86 boot sector, code offset 0x48
       linux-0.2.img:      x86 boot sector

       pls help check the above process. I will appreciate that anyone
points the potential errors.
      thank you~

best wishes,
kaiven

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