Booting into Recovery Mode via Command-R and opening terminal to execute the following command: spctl kext-consent add VB5E2TV963 Afterwards, rebooting back into the Normal OS environment allowed me to install with no kernel.exit errors. Thanx.I have installed the mac os el captain by going throw the steps but I want to run a software which require Heigh VGA specs and VirtualBox only allows me only 128mb of access from my grafic card can you please provide a solution for accessing 3D acceleration in mac os el captain. Starting in safe mode on a Mac when you have access to the actual hardware is easy: Just press and hold the shift key while booting. But on an OSX VM, you'll need to do the following to enable/disable safe boot: To start in safemode and verbose mode (Leave the -v off if you just want safe mode) sudo nvram boot-args='-x -v' Then reboot. Virtualbox boot Ubuntu 12.04 into recovery mode. Put the Ubuntu ISO in the drive When the VM starts up, press the ESC key to get into the install options screen. This entry was posted in Debugging and tagged ubuntu, virtualbox on September 3, 2012 by admin. VirtualBox is free, and its user interface is convenient and standardized for all supported host operating systems. Use VirtualBox for running software developed for different operating systems on your single physical machine simultaneously without the need to install multiple operating systems on a physical machine, and reboot to change the OS.
Put the Ubuntu ISO in the drive
When the VM starts up, press the ESC key to get into the install options screen
Press f6 to get the boot argument line to show (then ESC to hide the submenu)
Go down to boot from first hard disk, then type “boot=/casper single”
This should open up another menu, with the option to boot into recovery
And then you get another menu, choose to boot as root user
When you’re in the shell as root user, type: mount -o remount,rw /
Should now have read-write access to filesystem as root user
Today at work (I started writing this the same day, but it took a bit longer then I thought to finish), we needed to test a new calendar feature with the various devices our sales reps use. Android was easy, the entire IT staff have android phones, and most even have an android tablet. iPhone is another matter, no one had an apple device we could test on. Luckily we happened to have a few old iPhone 3 in our storage closet from when we switched phone carriers a few years ago. Unluckily, they were using an old iOS version and no longer activated. Activation and upgrading require iTunes, which runs on Windows, but I sadly run a linux machine. For windows only tasks I run a virtual Windows XP machine in VirtualBox.
VirtualBox can pass USB devices from the host machine to the virtual machine, but doing so requires an extension package. You can download the extension file from Oracle’s website, but there are several versions available. I use VirtualBox v4.1.12. The website says that the 4.1.xxx extension package only works with version 4.1.xxx but it installed properly on my system anyways. You can install extensions from the Preferences panel under File > Preferences (Or Ctrl+G).
Once you have the extension installed, plug in your iPhone. Next, open up the settings panel for your virtual machine and go to the USB tab. Enable the USB controller. You also need to add a new filter for the iPhone. The USB filter will connect the iPhone to the virtual device for you automatically when it is connected. Now we can close the panel and start the virtual machine.
On the right side of the panel are the buttons that allow you to add and remove USB filters
With the virtual machine running you can install iTunes and open it up, the iPhone should connect like it would on a physical machine. Once it has finished setting itself up, iTunes should offer any available updates to iOS, let it start the update. About half way through, the update will fail, this is because the iPhone has rebooted into recovery mode, which changes the USB identification. We need to go back to the settings panel and add the recovery mode iPhone to the USB filters.
After adding the recovery mode filter
Once that is done, we can manually connect the recovery mode iPhone to the virtual machine to reconnect the iPhone to the virtual machine. This is done by right clicking the USB button at the bottom right of the Virtual Machine and selecting the iPhone from the list. Once this is done iTunes will recognize the troubled iPhone and ask if you want to reset and update it.
Once you select the iPhone, it will have a check in the box to show that it is connected.
Mac Virtualbox Iso
At this point iTunes should be able to complete the update. As the iPhone shifts between normal and recovery mode, VirtualBox will use the filters you set earlier to automatically connect the device to the virtual machine, just like if it was a physical box. Once this is done you can remove the USB filters, or leave them as is so you can continue to use iTunes to load music and the like to your iPhone.
Software and versions used:
Oracle’s VirtualBox 4.1.12
Oracle VM VirtualBox Extension Pack 4.1.26
iTunes
Virtualbox Mac Os Recovery Mode
Hardware used:
iPhone 3g