Suddenlly 64-bit option disapeared from virtualbox and vmware. How to fix it?
1511
Why does virtualbox only have 32-bit option, no 64-bit option on Windows 7?
118767
Virtualbox broken after a dist-upgrade -- cannot install virtuabox-dkms nor run modprobe vboxdrv
89530
I am unable to open virtualbox
110515
VirtualBox not starting after kernel upgrade
107587
What happens when the USB key or SD card I've installed VMware ESXi on fails?
12969
Virtualbox Kernel driver not installed
156618
VBox on 14.04, Kernel driver not installed (rc=-1908)
81173
Installing VirtualBox inside of OpenVZ - missing sources
86525
Virtualbox: OS cannot use the new extended disk space (.vdi)
82314
How to run Android-x86 4.2 ISO on VM VirtualBox?
20717
How do I install the VirtualBox version from Oracle to install an Extension Pack?
143853
How to install VirtualBox from command line?
155359
Ubuntu 14.10 does not install in virtualbox
141262
VM VirtualBox doesn't allow to enable 64-bit guest on Ubuntu 12.04 and Lenovo G500S
78671
Cannot install virtualbox extension pack
131032
How to compact VirtualBox's VDI file size?
25889
Which version of Windows 7 to buy to legally use in Ubuntu VirtualBox?