Wise Package Studio Reference
238
Capturing Applications
How the Virtual OS Works
A virtual OS consists of a simulated directory structure and a simulated area of the
registry. The complete clean machine is duplicated in this directory and registry
structure, which takes a substantial amount of free disk space. When SetupCapture runs
an installation, all files and registry entries are redirected to the simulated directory
structure and registry, preventing changes from actually happening on your computer.
During each subsequent session of SetupCapture, the Virtual OS is cleaned. This means
that installed remnants from the last capture are removed from the Virtual OS directory
and registry structure. This lets you perform multiple captures on the same computer
without reimaging between each and without having previous capture results interfere
with the current capture.
See also:
Guidelines for Virtual Capture
on page 238
Guidelines for Virtual Capture
¾
Not available in Standard Edition.
z
The Virtual OS Creation utility should only be run on a clean machine.
See
Setting Up a Clean Machine
on page 218.
z
Virtual Capture can only be used on Windows 2000 and later.
z
The computer on which you use Virtual Capture or perform a Universal Import must
have the same operating system as the computer on which the Virtual OS was
created. Example: If you ran the Virtual OS Creation utility on a computer with
Windows 2000, service pack 2, MDAC 2.5, and Internet Explorer 5, then the
computer where you run SetupCapture with Virtual Capture must also have
Windows 2000, service pack 2, MDAC 2.5, and Internet Explorer 5.
z
The contents of the computer on which you create the Virtual OS cannot exceed 3
GB of used space.
z
Execute the original application from a location other than the drive that contains
the Virtual OS file (which is always the drive with Windows). Example: If your C
drive contains Windows and your WiseImg directories, then execute the application
from a network location, a second drive, or a CD drive.
z
When you create a Virtual OS, run Virtual Capture, or perform a Universal Import,
you need enough free disk space to completely duplicate the computer’s contents,
plus extra space for virtual memory and for installing applications that you capture.
z
The virtual directory structure must be on the same drive letter (partition) as the
Windows directory.
z
While using Virtual Capture, it is very important to start installations from the
Execute or Next button on the Execute Installation page of SetupCapture. While
performing a Universal Import in Software Manager, you must start installations
from the Next button on the Package Details page. If you start them outside the
Execute Installation or Package Details page, SetupCapture or Universal Import is
unaware of the changes that occur.
z
The option to capture into a virtual software layer is not available with the Virtual
Capture method.
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