C:\Program Files\Sun\xVM VirtualBox>VBoxManage.exe registerimage disk "d:\misc\vpc\xpsp3-ie6\XP SP3 with IE6.vhd" -type normal VirtualBox Command Line Management Interface Version 2.1.0 (C) 2005-2008 Sun Microsystems, Inc. All rights reserved. [!] FAILED calling virtualBox->OpenHardDisk2(filepath, hardDisk.asOutParam()) at line 897! [!] Primary RC = E_FAIL (0x80004005) - Unspecified error [!] Full error info present: true , basic error info present: true [!] Result Code = E_FAIL (0x80004005) - Unspecified error [!] Text = Could not open the hard disk 'd:\misc\vpc\xpsp3-ie6\XP SP3 with IE6.vhd'. VDI: invalid pre-header in 'd:\misc\vpc\xpsp3-ie6\XP SP3 with IE6.vhd' (VERR_VD_VDI_INVALID_SIGNATURE). VD: error opening image file 'd:\misc\vpc\xpsp3-ie6\XP SP3 with IE6.vhd' (VERR_VD_VDI_INVALID_SIGNATURE) [!] Component = HardDisk2, Interface: IHardDisk2, {ed6e2525-c2fd-42a4-917a-7a9045ac9e15} [!] Callee = IVirtualBox, {339abca2-f47a-4302-87f5-7bc324e6bbde}