id summary reporter owner description type status component version resolution keywords cc guest host 11960 vboxmanage modifyhd corrupts vhd files => fixed in SVN Edward Yang "I tried to resize some of my VHD files which I formerly ran using Microsoft VPC. vboxmanage modifyhd abc.vhd --resize 25600 The command runs without error. But I'm not able to boot into the guest OS anymore; the VHD is corrupt. However If I convert the VHD to VDI using vboxmanage clonehd --format VDI and run the modifyhd command, everything works fine - I can boot into the guest OS on the VDI. I googled and found this guy (http://wp.sjkp.dk/tag/modifyhd/) is also having the same problem. " defect closed virtual disk VirtualBox 4.2.16 fixed other all