This is so simple, even a caveman can do it. First off let’s look at the current Boot Configuration Database (BCD) using then command prompt and BCDEDIT.exe. In the scenario below I will be running a Windows 7 operating system and adding a Windows Server 2012 R2 VHD.
Note: Ensure the original operating system hard drive has enough free space to expand the VHD you are booting into.
Take note that there is currently only one operating system available in the current configuration.
Using the following 4 steps will now configure the Windows 7 computer to boot from .VHD a Windows Sever 2012 R2 operating system.
Step 1:
1. Attach the desired VHD.
See the blog post: How to attach a VHD in Windows 7, Windows 8, Windows Server 2008 R2 and Windows Server 2012 for steps.
2. Note the drive letter assigned to the volume containing the operating system you desire to boot to. In this case it is drive letter F.
Step 2:
1. Launch the Command Prompt with administrative privileges.
2. At the command prompt, use bcdboot to add a boot file to the Boot Configuration Database.
Type bcdboot F:\windows (Drive letter is the identified in step 2 above) and press enter. Verify the response says a new Boot file was created.
3. At the command prompt, use bcdedit /set to configure the boot option name.
Type bcdedit /set {default} Description “Windows Server 2012 R2” and then press Enter. Verify the response says operation completed successfully.
4. At the command prompt, use bcdedit verify the new entries in the Boot Configuration Database.
Step 3:
Detach the VHD .
See the blog post: How to attach a VHD in Windows 7, Windows 8, Windows Server 2008 R2 and Windows Server 2012 for steps.
Step 4:
Restart the computer and choose your desired operating system.
It is that simple, until next time- RIDE SAFE!!!
Rick Trader
Windows Server Instructor – Interface Technical Training
Phoenix, AZ
