Mr. klaus, unfortunately your answer was wrong. I did it this way:
1) Create new disk (e.g. 2TB size) and shutdown VM.
2) Run:
Code: Select all
c:\Program Files\Oracle\VirtualBox\VBoxManage.exe clonehd --existing disk1.vdi new-disk.vdi
4) Open disk-management tool (in virtual machine's Windows) and extend your existing partition.
Creation of small dynamically allocated disks is mistake of the beginners, like I am. Please, write somewhere into the wizard for disk creation that disk cannot be re-sized in future.
Best regards,
Milan
Edit: clonevdi > clonehd