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Background - I am dualbooting Win10 and Kubuntu 14.04.

Windows 10 has it's own 240 GB SSD (C:) and a 1 TB drive (D:).

Under Disk Management

  • C: shows as Disk 2
  • D: shows as Disk 1.

Disk 0 is a 240 GB SSD which I use as my Linux home partition and I have another 2 TB HDD for Linux data which shows as Disk 3 in Windows 10.

Now, I want to use my Linux partitions within VirtualBox after booting up Windows 10. Following this documentation as well as this, I open up the cmd prompt rom windows and type in:

VBoxManage.exe internalcommands createrawvmdk -filename "C:\Users\jrobe\VirtualBox VMs\Jarvis\jrvs_ptr.vmdk" -rawdisk \\.\PhysicalDrive0

which does, indeed, create the .vmdk file, but when I go to boot it from within VBox, it tells me FATAL: No bootable medium found! System halted.

Any ideas how to boot to this device? All I really want to do is to be able to edit contents on Disk 0 and Disk 3 from within Windows 10. I would also be open to creating a new VM and just mounting these locations, but I'm not sure how to do that.

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    I am not dualbooting with Vbox. I am actually dualbooting. I want the ability to boot totally to the Linux OS but also access the Linux OS from within Windows.
    – drjrm3
    Commented Mar 27, 2016 at 21:17

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Your issue might be that you have boot loader on Disk 2

So when you are creating a virtual machine using physical hard drive it's missing the boot loader

Inside your VM :

  • add a virtual disk it can be like 2GB vmdk
  • and also add your Disk 0 and Disk 3

Now next step is to add boot loader on this virtual disk. and this boot loader would load the OS from your Disk 0 or Disk 3 wherever it exits

How to manually install boot loader?

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  • Sounds reasonable, however when I make the small disk and boot into the live CD, then run grub-install --recheck --no-floppy --root-directory=/ /dev/sda, I get grub-install: error: failed to get canonical path of '/cow'
    – drjrm3
    Commented Mar 27, 2016 at 21:45

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