In the confirmation box that appears, click Erase.Select the disk with the partition size you created earlier on > Click on the ERASE tab.The license agreement screen should appear, Click on Agree.Select 'Use english for the main language' then click the arrow button.A black CMD prompt like screen should appear, Press Enter key to proceed.Select the Virtual machine by clicking on it then Click on Start.In the window that appears next, Navigate to the location of the Mavericks ISO you downloaded earlier, select the ISO file and Click on Open.Still on the storage tab, Click on small CD icon below 'Attributes' then Click on 'Choose a Virtual CD/DVD disk file.'.In the Storage tab, Click on the CD drive labelled as Empty.In the Display tab, move the slider beside video memory to the maximum (should be 128MB) and tick the check-box beside Enable 3D Acceleration, then click on the Storage tab.In the System tab, Untick the checkboxes beside 'Floppy' and 'Enable EFI (special OSes only)', then click on the Display tab.In the window that appears next, click on the System tab.Right click on the newly created machine then click on Settings.Specify the maximum disk size (should be above 20GB) then click on Create.Tick the round box beside 'Dynamically allocated', then click on Next.Tick the round box beside 'VDI (Virtual Disk Image)', then click on Next Tick the round box beside 'Create a virtual hard disk now', then click on Create.Set RAM size for the machine (a minimum of 2GB is required), then click on Next.Version: Mac OS X 10.9 Mavericks (64-bit) In the window that appears next, fill in the details below.At the top left hand corner, Click on 'New'.How to install Mac OS X in Windows using Virtual Box A Windows PC (at least 4GB RAM with Vitualization enabled).We've already posted a guide on Installing Mac OS X 10.9 (Mavericks) using VMware but who knows you might just prefer Virtual Box to VMware

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