virtualbox.org

From help file, about to [--resize x] option:
This currently works only for VDI and VHD formats, and only for the dynamically allocated variants, and can only be used to expand (not shrink) the capacity.

How can resize the size of a VMDK file?

Thank.

Nothing in Virtualbox can do that, according to the manual. Mpack's CloneVDI can read the vmdk, but will give you a vdi as output. You'll have to get a VMware tool, perhaps, to resize a vmdk.

I created the vm using VirtualBox, but probably I chosed the wrong disk format.
So, I converted it to VDI using

VBoxManage clonemedium

next I create a new vm, finally resized using

VBoxManage modifymedium

Thank you!!!

I wonder why you didn't just use CloneVDI as Scottgus suggested? It would have done the conversion and resize in a single pass. A compaction too if you had wanted. All done in at most half the time your procedure took, without ever seeing a command line.

I don't know CloneVDI.
Where is?

CloneVDI.

Ok, I found it and try...
Superb!!!
If I knew it before...

Thank you!