id summary reporter owner description type status component version resolution keywords cc guest host 8213 VBoxManage modifyhd --immutable failure Perry G "I cloned (using VBox clonehd) three different formats of a working VM. Clone went smooth and created (1) *.vdi, (2) *.vhd, and (3) *.vmdk. Next I tried to set the three to immutable using VBoxManage modifyhd --type immutable. All three returned the same error. {{{ VBoxManage: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBox, interface IVirtualBox, callee nsISupports Context: ""FindMedium(Bstr(pszFilenameOrUuid).raw(), enmDevType, pMedium.asOutParam())"" at line 174 of file VBoxManageDisk.cpp }}} According to the help section I should be able to do this, but can't. I am attaching a text file of the process. I went so far as typing the absolute path as well, but that made no difference. I also tried the UUID but still nothing. The reason I am doing this is I had a user ask for help because they could not get it to work. Not something I do everyday. So where did I go wrong, or is something broken?" defect closed VM control VirtualBox 4.0.2 duplicate VBoxManage modifyhd Linux Linux