http://www.beingmanan.com/wp/2009/10/complete-guide-to-using-vhds-windows-virtua l-pc-windows-xp-mode-isos-on-windows-7/ C:\>bcdedit /copy {current} /d "Windows 2008 R2" The entry was successfully copied to {47eb93b4-7fa2-11e0-b372-f450fda4bc00}. C:\>bcdedit /set {47eb93b4-7fa2-11e0-b372-f450fda4bc00} device vhd="F:\new AX20 2 hyper V\AX2012\Microsoft Dynamics AX 2012 FP - AX2012-A\Virtual Hard Disks\ax 012.vhd" The device is not valid as specified. Run "bcdedit /?" for command line assistance. The parameter is incorrect. C:\>bcdedit /set {47eb93b4-7fa2-11e0-b372-f450fda4bc00} device vhd=F:\new AX201 hyper V\AX2012\Microsoft Dynamics AX 2012 FP - AX2012-A\Virtual Hard Disks\ax2 12.vhd The device is not valid as specified. Run "bcdedit /?" for command line assistance. The parameter is incorrect. C:\>bcdedit /set {47eb93b4-7fa2-11e0-b372-f450fda4bc00} device vhd=F:\new AX201 hyper V\AX2012\Microsoft Dynamics AX 2012 FP - AX2012-A\Virtual Hard Disks\ax2 12-A.vhd The device is not valid as specified. Run "bcdedit /?" for command line assistance. The parameter is incorrect. C:\>bcdedit /set {47eb93b4-7fa2-11e0-b372-f450fda4bc00} device vhd="F:\new AX20 2 hyper V\AX2012\Microsoft Dynamics AX 2012 FP - AX2012-A\Virtual Hard Disks\ax 012-A.vhd" The device is not valid as specified. Run "bcdedit /?" for command line assistance. The parameter is incorrect. C:\>bcdedit /set {47eb93b4-7fa2-11e0-b372-f450fda4bc00} device vhd=[F:]\new AX2 12 hyper V\AX2012\Microsoft Dynamics AX 2012 FP - AX2012-A\Virtual Hard Disks\a 2012-A.vhd