Vboxmanage.exe: Error: resize hard disk operation for this format is not implemented yet!

Virtualbox virtual disk space is insufficient. The default value is 10 Gb. The operable menu is not found in the graphic interface. Google uses the vboxmanage command tool that comes with vbox to solve the problem.

C: \ Program Files \ oracle \ virtualbox> vboxmanage modifyhd E: \ vbox \ ubuntu12.04 \ Ubuntu1204-201302-disk1.vmdk -- resize 30000
0%...
Progress state: vbox_e_not_supported
Vboxmanage.exe: Error: resize hard disk operation for this format is not implemented yet!

The original virtual machine uses the vmdk format. This command can only support the VDI format.. What should I do?

YesUse vboxmanager to convert the format of virtual hard disk storage files
C: \ Program Files \ oracle \ virtualbox> vboxmanage clonehd E: \ vbox \ ubuntu12.04 \ Ubuntu1204-201302-disk1.vmdk E: \ vbox \ ubuntu12.04 \ Ubuntu1204-201310-disk1.vdi -- format VDI
0%... 10%... 20%... 30%... 40%... 50%... 60%... 70%... 80%... 90%... 100%
Clone hard disk created in format 'vdi '. UUID: 455b7aa4-d776-4154-8353-d9b5b3fa1
09B

LastUse vboxmanager to resize the converted VDI File
C: \ Program Files \ oracle \ virtualbox> vboxmanage modifyhd E: \ vbox \ ubuntu12.04 \ ubunt
U1204-201310-disk1.vdi -- resize 30000
0%... 10%... 20%... 30%... 40%... 50%... 60%... 70%... 80%... 90%... 100%

No more error is reported.

-- This article from: http://blog.sina.com.cn/s/blog_484d87770101olzr.html