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How can I import my old OS on VirtualBox?

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http://askubuntu.com – I used to work with a virtual machine on which I installed Ubuntu (and my host is Apple OS X). But my Mac's hard-drive crashed. I managed to retrive the .vdi file on my VirtualBox App folder. How can I install it again? (HowTos)

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Submitted by Songlist on 12/28/2012 – Made popular on 12/28/2012

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I had a major crash on my ubuntu 12.04.lts computer system. I had to push the restart button in order to get the computer to run again.

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My Ubuntu 12.04 install is on /dev/sda5 and Windows 7 is on /dev/sda1. When I am running Ubuntu, I would like to use Virtualbox to run Windows 7 in a VM. The Windows 7 partition is 1 TB and is half full, i.e.

I installed Ubuntu 12.04 last week. Now I want to use windows 7 on ubuntu via virtualbox. I installed the virtualbox and created a new machine namely 'windows 7', im booting through an iso image... when i start the virtual machine it does not run.

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