Virtualization is not available within ubuntu image that was installed through virtual box on Windows 7
64379
Nested Virtualization
92190
Error code 0x803F7001 activating Windows inside Virtual Box
100407
How do I set up shared folders in a Windows Virtualbox guest?
126688
Using Windows 10 in a virtual machine. Can it be done?
61726
Mount a VirtualBox drive image (vdi)?
1511
Why does virtualbox only have 32-bit option, no 64-bit option on Windows 7?
120129
How to boot from a USB drive in VirtualBox?
133315
virtual box doesnt shows 64 bit os in ubuntu14.04 64 bit
73755
How to access a shared folder in VirtualBox?
122373
VirtualBox 4.3 on Ubuntu 13.10 unable to run VM
37151
Convert my physical Operating System to a VirtualBox Disk
12332
Why can't Virtual PC attach a VHD?
139647
Do I Need Linux Drivers For Virtual Box?
9358
How do I install Ubuntu in VMware?
45344
How can I enable access to USB devices within VirtualBox guests?
151499
Can I install Windows 7 64 bit on VirtualBox running on a Windows 7 32 bit OS?
24890
How do I migrate my Windows desktop to a VirtualBox VM?