Boot from VHD Upgrade

So why has Microsoft not learned that customers need the ability to upgrade Windows when using native VHD boot???  I have a lot of systems that we installed Windows 7 and Windows 8.1 on Native VHD Boot, but cannot upgrade the OS.  My workaround
was to get a Windows Server 2012 Hyper-V host up, create a VM that uses the source VHD to upgrade the OS.  But that's not practical for 100's of systems.  Can someone please explain why this limitation exists?  If the Windows Installer supports
Native VHD Boot and Install, why can't an upgrade?

Hi Arman mohseni,
From my observation, if I click download now, it would create a BITS task:
We can use following command to check:
Import-module bitstransfer
Get-bitstransfer –allusers
From the output, we can see the system account created a BITS job for transferring, under the C:\Windows\Software Distribution\download, we can get the temporary downloaded file, which is approximately about 2.5G.
After we restart, and go to C:\Windows\Software Distribution\download, the temporary file is gone.
If I click the download again, the BITS would create a new task, a new temporary file, if we compare the JobIds of the two times downloading, they are totally different.
On the other hand, if we download a windows update, the JobId would be kept, and the temporary files would be kept, too.
Alex Zhao
TechNet Community Support

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    I do not need Mac OS X 10.2.8 back, but it would be nice to boot back in Mac OS X 10.4.8 from another volume as the current one - which was working fine before with Mac OS X 10.4.7.
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    Josef

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