Re: [Qemu-devel] [Bug 1737194] Re: Windows NT 4.0 fails to boot from qcow2 installation

[John Arbuckle]

> On Jan 25, 2018, at 2:53 AM, i336_ <address@hidden> wrote:
> 
> Hi,
> 
> I've been experiencing various disk I/O issues with Windows NT too, as
> well as with Windows 3.1. I think `-M isapc` may be to blame somehow.
> 
> I've documented my experiences over at
> https://bugs.launchpad.net/qemu/+bug/1745312.
> 
> That report contains information on how to lift out and build the
> before-and-after QEMU commits that I think relate to this being broken.
> John Arbuckle, perhaps you could run through that and see if you
> continue to have issues.
> 
> I was initially going to post that report as a comment in this thread,
> until I realized I was having I/O issues on multiple operating systems.
> 
> -- 
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1737194
> 
> Title:
>  Windows NT 4.0 fails to boot from qcow2 installation
> 
> Status in QEMU:
>  New
> 
> Bug description:
>  Windows NT 4.0 will not boot from an installation more than once if
>  installed in a qcow2 image file. A quick fix to this problem is to use
>  the qcow format instead.
> 
>  Steps to reproduce this issue:
> 
>  Create the image file:
>  qemu-img create -f qcow2 winnt4.qcow2 1G
> 
>  Boot from a Windows NT 4.0 Workstation CD:
>  qemu-system-i386 -hda winnt4.qcow2 -cdrom /dev/cdrom -boot d -m 128 -cpu 
> pentium -vga cirrus
> 
>  During the installation process you have the choise between FAT and
>  NTFS. You can pick anyone.
> 
>  After finishing the installation the guest will reboot to install
>  additional items. Once this is done the guest will be bootable. Eject
>  any CD media from QEMU and reboot. You will then see Windows NT 4.0
>  booting up to the desktop. Go to "Start->Shut down" to shut down. Then
>  when Windows is ready quit QEMU.
> 
>  Now try to boot using this command:
>  qemu-system-i386 -hda winnt4.qcow2 -boot c -m 128 -cpu pentium -vga cirrus 
> 
>  The BIOS screen will display an error message:
> 
>  For NTFS: 
>  Booting from Hard Disk...
>  A disk read error occurred.
>  Insert a system diskette and restart
>  the system.
> 
>  For FAT:
>  No bootable device.
> 
>  Additional information:
>  qemu-system-i386 version: 2.10.1
>  qemu-img version: 2.10.92 (v2.11.0-rc4-dirty)
> 
>  If you don't have a Windows NT 4.0 Workstation installation CD, you may 
> download one from here:
>  https://winworldpc.com/product/windows-nt-40/40
> 
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/qemu/+bug/1737194/+subscriptions

I did try to build at commits 306ec6c3cece7004429c79c1ac93d49919f1f1cc
and e689f7c668cbd9d08f330e17c3dd3a059c9553d3. Both failed to build on my
Mac OS X system. Here is the error message I usually saw:

  LINK  qemu-io
Undefined symbols for architecture x86_64:
  "_use_rt_clock", referenced from:
      _bdrv_acct_start in block.o
      _bdrv_acct_done in block.o
Undefined symbols for architecture x86_64:
      _qemu_clock_get_ns in qemu-timer.o
  "_use_rt_clock", referenced from:
      _bdrv_acct_start in block.o
      _bdrv_acct_done in block.o
      _qemu_clock_get_ns in qemu-timer.o

In your report you mention using the raw disk image format and VHD(x). I
have had great success with the qcow image format. Could you try it and
let us know if it fixes things for you?

To create a qcow image file:
 qemu-img create -f qcow <HD image file name>.qcow 1G

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https://bugs.launchpad.net/bugs/1737194

Title:
  Windows NT 4.0 fails to boot from qcow2 installation

Status in QEMU:
  New

Bug description:
  Windows NT 4.0 will not boot from an installation more than once if
  installed in a qcow2 image file. A quick fix to this problem is to use
  the qcow format instead.

  Steps to reproduce this issue:

  Create the image file:
  qemu-img create -f qcow2 winnt4.qcow2 1G

  Boot from a Windows NT 4.0 Workstation CD:
  qemu-system-i386 -hda winnt4.qcow2 -cdrom /dev/cdrom -boot d -m 128 -cpu 
pentium -vga cirrus

  During the installation process you have the choise between FAT and
  NTFS. You can pick anyone.

  After finishing the installation the guest will reboot to install
  additional items. Once this is done the guest will be bootable. Eject
  any CD media from QEMU and reboot. You will then see Windows NT 4.0
  booting up to the desktop. Go to "Start->Shut down" to shut down. Then
  when Windows is ready quit QEMU.

  Now try to boot using this command:
  qemu-system-i386 -hda winnt4.qcow2 -boot c -m 128 -cpu pentium -vga cirrus 
   
  The BIOS screen will display an error message:

  For NTFS: 
  Booting from Hard Disk...
  A disk read error occurred.
  Insert a system diskette and restart
  the system.

  For FAT:
  No bootable device.

  Additional information:
  qemu-system-i386 version: 2.10.1
  qemu-img version: 2.10.92 (v2.11.0-rc4-dirty)

  If you don't have a Windows NT 4.0 Workstation installation CD, you may 
download one from here:
  https://winworldpc.com/product/windows-nt-40/40

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1737194/+subscriptions