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Saturday, March 21, 2009

Boot your physical machine from a VHD file

a new feature has been added to Windows 7 and Windows Server 2008 R2 which allow users to install the OS on a VHD file and therefore to boot from that file and use it as OS partition.

I was trying this feature 2 weeks ago, but I failed to install it, it seems for me that because I am using VHD Dynamically expandable Disk.

I have successfully installed Windows Server 2008 R2 on my laptop HP 6730b and below a snapshot of Disk Management snap in


and here is the list of drivers for drives attached to your system, you will see MSFT Virtual Disk SCSI Disk Device; this is the VHD driver.


Installing Window 7 / Server 2008 R2

1- Boot from you Windows DVD.

2-Start the command prompt by press shift+f10 on the install now screen.

3- Launch Diskpart command utility by typing diskpart on the prompt then type the below commands.

create vdisk file=c:\r2.vhd type=fixed maximum=10240
select vdisk file=c:\2.vhd
attach vdisk

now you can get back to installation and continue installation as normal by selecting the virtual disk 

Notice that there is a message to inform that you can not install on this disk you can ignore it safely.

continue normally and you will find bootable Windows through VHD file.

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