virtualbox.org

hi everyone I want to upgrade my system and I need ny vitual system data how can I move them to my upgraded system
last time I upgrade my system I copy virtual hard but when I install virtual box and and try to use my virtual hard but it doesnt agree that hard

The *.vdi files are the actual (hard drive) for the operating system. If you do not have any snap shots you can simply copy the information from the guest settings and then create a now VM and tie the VDI file to it. Other than that you could export the VM and then import it to the new machine. This works really well for me. I transfer machines all the time between one computer and another and they easily install.

Other than that you could export the VM and then import it to the new machine

how can I export the vm my version is2.0.4

Sorry, your profile did not say and I assumed you had a newer version.
I think it was introduced in version 2.1.4, though not sure any more.

xcuse me if I upgrade my virsion what happen to my vm

Upgrading should not harm the VM as they are saved in a location that does not get deleted if you upgrade or uninstall and then install the new version.
With your version it is advisable to uninstall and then install the new version due to the many changes that has occurred between versions.
You should however backup the .virtualbox folder and all control files first to be safe.
Actually backing up the directory and control files should be done on a regular basis anyway to protect you work.