Category: Virtualization

Converting VHD boot disk from IDE to SCSI in Virtual Server 2005

By , March 17, 2008 12:16 pm

SCSI disk are usually faster than IDE disk. This too applies to virtual hard disk. But if you ever got into a situation where you have deployed your VHD as IDE disk, you can still convert them into SCSI disk without having to rebuild the VHD.

  1. Launch Virtual Server Administration Website.
  2. On the side panel, under Virtual Machines, choose Configure and select the VM that you want to configure.
  3. Click on SCSI adapters in the configuration page.
  4. Click on Add SCSI Adapter, SCSI adapter ID: 7 and click OK.
  5. Leave the VHD as IDE disk and start the VM.
  6. Once inside the VM, go to Device Manager, look under Storage controllers (Windows Vista) or SCSI and RAID controllers (Windows XP). You should see the following
    • Adaptec AIC-7870 PCI SCSI Adapter or
      • If you have Adaptec AIC-7870 PCI SCSI Adapter, you will need to install a new driver. The Adaptec driver will do, but it is a slow SCSI driver. To update the driver
        1. Right click on the adapter and select Update Driver…
        2. Choose Install from a list or specific location and Have Disk.
        3. Browse to %Programfiles%\Virtual Machine Additions and click OK.
        4. The driver will then be installed. Make sure that Microsoft Virtual Machine PCI SCSI Controller is listed in device manager now.
    • Microsoft Virtual Machine PCI SCSI Controller
  7. Shutdown the VM.
  8. Move the IDE VHD boot disk to a SCSI interface.
  9. Start the VM.

Virtual PC 2007 Release Candidate

By , January 3, 2007 12:18 pm

The RC version is out for testing. You can download it at Microsoft Connect if you had enrolled into the beta program. If not, you can get yourself enrolled at

Note: The RC release is not a final release. It is meant for testing purposes only. Do not use it for mission critical applications.

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