Help needed / Cannot register the hard disk

[Arctic_Ace]

Hi!

I'm a VirtualBox beginner... I have earlier used M$ VirtualPC and following works fine in there:

1) I have made a master OS file, lets call it master_os1.vdi

2) I'd like to use that file for other virtual systems as well, so I have copied and renamed it to master_os2.vdi

3) If I try to build up a new machine and try to use "master_os2.vdi" as a HD, then there will be shown followin error:

Cannot register the hard disk 'C:\master_os2.vdi' with UUID {xxxxx1} because a hard disk 'C:\master_os1.vdi' with UUID {xxxxx1} already exists in the media registry ('C:\Documents and Settings\user1\.VirtualBox\VirtualBox.xml').

4) What should I do to get master_os2.vdi to work? I don't want to start installations always from beginning...

Thank you very much of any kind of help!

[Perryg]

Instead of just changing the name you should clone the original drive. That way it will generate a new UUID. See section 8.16. VBoxManage clonehd of the users guide.
Or if you would like a program that will do this for you check this out CloneVDI Tool