WarrenJon

Not sure if this will help at this point (7 years later). But find the caption or deviceID of the volume in wmic and use it instead of the volume letter. C:\Users\jwarren>wmicwmic:root\cli>volumeAccess Automount Availability BlockSize BootVolume Capacity Caption TRUE 4096 TRUE 255505461248 C:\ TRUE 4096 FALSE 314568704 \\?\Volume{1eefc47f-91b7-4a90-b6cc-9ef1d0db6f89}\ c:\imagex.exe /capture \\?\Volume{1eefc47f-91b7-4a90-b6cc-9ef1d0db6f89}\ e:\HiddenVolume.wim "bah" This also works in reverse c:\imagex.exe /apply e:\HiddenVolume.wim 1 \\?\Volume{1eefc47f-91b7-4a90-b6cc-9ef1d0db6f89}\ of course the likely hood of the new volume having the same caption is near impossible.